WESTOWER CORP
8-K, 1998-09-15
WATER, SEWER, PIPELINE, COMM & POWER LINE CONSTRUCTION
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549


                                    FORM 8-K


               CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                      THE SECURITIES EXCHANGE ACT OF 1934



 DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): AUGUST 31, 1998
                                                  ---------------------------


                             WESTOWER CORPORATION
 ----------------------------------------------------------------------------
            (Exact name of registrant as specified in its charter)



          WASHINGTON                  333-32963              91-1825860
      -------------------            -----------         ------------------
        (State or Other              (Commission           (IRS Employer
        Jurisdiction of              File Number)        Identification No.)
        Incorporation)



             7001 N.E. 40TH AVENUE, VANCOUVER, WASHINGTON     98661
   ------------------------------------------------------------------------
             (Address of Principal Executive Offices)      (Zip Code)



     REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:   (360) 750-9355
                                                           ----------------



- --------------------------------------------------------------------------------
         (Former Name or Former Address, if Changed Since Last Report)
<PAGE>
 
ITEM 2.   ACQUISITION OR DISPOSITION OF ASSETS.
          ------------------------------------ 

     On August 31, 1998, Westower Corporation (the "Company") completed the
acquisition of Standby Services, Inc., a Texas corporation ("Standby"), pursuant
to a Share Exchange Agreement (the "Exchange Agreement") between the Company and
Tom T. Cunningham ("Cunningham"), the sole shareholder of Standby.  Standby,
headquartered in Houston, Texas, has provided electrical contracting,
engineering, tower construction and related services to wireless and traditional
telephone companies since 1989.  The acquisition extends the Company's tower
construction business into Texas and the contiguous states, including
Mississippi, Louisiana, Colorado and New Mexico.  The Company intends to use the
assets of Standby as they were used prior to the acquisition.

     Pursuant to the terms of the Exchange Agreement, Cunningham received
543,590 shares of Westower common stock, par value $.01 per share, in exchange
for all of the outstanding stock of Standby.  The amount of consideration was
determined by arms-length negotiations between the parties.

     The foregoing description is qualified in its entirety by reference to the
Exchange Agreement, a copy of which is attached hereto as Exhibit 2.1.


ITEM 7.   FINANCIAL STATEMENTS.
          -------------------- 

(a)  Financial Statements of Business Acquired.

     To be filed by amendment on Form 8-K/A within 60 days after the date this
Current Report is required to be filed.

(b)  Pro Forma Financial Information.

     To be filed by amendment on Form 8-K/A within 60 days after the date this
Current Report is required to be filed.

(c)  Exhibits.

     2.1  Share Exchange Agreement, dated as of August 31, 1998, between
          Westower Corporation and Tom T. Cunningham, sole shareholder of
          Standby Services, Inc., a Texas corporation.*

     2.2  Registration Rights Agreement, dated as of August 31, 1998, between
          Westower Corporation and Tom T. Cunningham.

     2.3  Employment Agreement, dated as of August 31, 1998, between Standby
          Services, Inc. and Tom T. Cunningham.


__________
* The schedules to this document are not being filed herewith, but will be
  furnished to the Securities and Exchange Commission upon request.

                                       1
<PAGE>
 
                                   SIGNATURE
                                   ---------



     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                    WESTOWER CORPORATION



Date:  September 14, 1998           By: /s/ Peter Lucas
                                       -----------------------------------
                                       Peter Lucas, Senior Vice President,
                                       Chief Financial Officer, Treasurer
                                       and Secretary
<PAGE>
 
                                 Exhibit Index
                                 -------------



Exhibit
- -------

2.1  Share Exchange Agreement, dated as of August 31, 1998, between Westower
     Corporation and Tom T. Cunningham, sole shareholder of Standby Services,
     Inc., a Texas corporation.

2.2  Registration Rights Agreement, dated as of August 31, 1998, between
     Westower Corporation and Tom T. Cunningham.

2.3  Employment Agreement, dated as of August 31, 1998, between Standby
     Services, Inc. and Tom T. Cunningham.

<PAGE>
 
                                                                     EXHIBIT 2.1

                                                                  EXECUTION COPY



                            SHARE EXCHANGE AGREEMENT

                                 BY AND BETWEEN
                              WESTOWER CORPORATION

                                      AND

                     TOM T. CUNNINGHAM, SOLE SHAREHOLDER OF
                  STANDBY SERVICES, INC., A TEXAS CORPORATION

                          DATED AS OF AUGUST 31, 1998
<PAGE>
 
                               TABLE OF CONTENTS
 
 
<TABLE>
<S>           <C>                                                                   <C>
ARTICLE I     Share Exchange........................................................ 1
        1.1.  Exchange of Shares.................................................... 1

ARTICLE II    Closing and Closing Documents......................................... 2
        2.1.  Date, Time and Place of Closing....................................... 2
        2.2.  The Shareholder Closing Documents; Deliveries to Westower............. 2
        2.3.  Westower Closing Documents; Deliveries to the Shareholder............. 3

ARTICLE III   Representations and Warranties of the Shareholder..................... 3
        3.1.  Organization and Authority of the Company............................. 4
        3.2.  No Subsidiaries, Partnerships and Joint Ventures...................... 4
        3.3.  Financial Statements.................................................. 4
        3.4.  No Undisclosed Liabilities............................................ 4
        3.5.  Dealings with Affiliates.............................................. 4
        3.6.  Taxes................................................................. 4
        3.7.  Contracts............................................................. 6
        3.8.  Intentionally Omitted................................................. 6
        3.9.  Litigation............................................................ 6
       3.10.  No Default............................................................ 6
       3.11.  Liabilities........................................................... 6
       3.12.  Permits and Approvals................................................. 7
       3.13.  Intentionally Omitted................................................. 7
       3.14.  Accounts Receivable................................................... 7
       3.15.  Corporate Books and Records........................................... 7
       3.16.  Title to Properties................................................... 7
       3.17.  Conflicts with Instruments and Laws................................... 7
       3.18.  Governmental Authorizations........................................... 8
       3.19.  Claims, Administrative Actions and Lawsuits........................... 8
       3.20.  Leases; No Unowned Assets Utilized.................................... 8
       3.21.  Insurance............................................................. 8
       3.22.  Pooling of Interests.................................................. 9
       3.23.  Absence of Certain Changes or Events.................................. 9
       3.24.  Real Property; Business Locations.....................................10
       3.25.  Environmental Liabilities.............................................10
       3.26.  Absence of Questionable Payments......................................11
       3.27.  The Company's Employees...............................................12
       3.28.  WARN..................................................................12
       3.29.  Compliance with Laws..................................................12
       3.30.  Employee Benefit Plans................................................12
       3.31.  Full Disclosure.......................................................13
</TABLE>

                                      -i-
<PAGE>
 
<TABLE>
<S>           <C>                                                                  <C>
       3.32.  Reliance..............................................................13

ARTICLE IV    Representations and Warranties of the Shareholder Concerning Stock,
Agreement and the Westower Shares...................................................13
        4.1.  Enforceability........................................................13
        4.2.  Stock of the Company..................................................13
        4.3.  Ownership of the Company Shares.......................................14
        4.4.  Investment Intent.....................................................14
        4.5.  No Current Registration of the Westower Shares........................14
        4.6.  Information Related to the Westower Shares............................14

ARTICLE V     Representations and Warranties of Westower............................14
        5.1.  Organization and Existence............................................15
        5.2.  Power and Authority...................................................15
        5.3.  Authorization.........................................................15
        5.4.  Binding Effect........................................................15
        5.5.  Capitalization........................................................15
        5.6.  Westower Shares.......................................................15
        5.7.  Westower Financial Statements.........................................15
        5.8.  No Default............................................................15
        5.9.  No Consents...........................................................16
       5.10.  No Knowledge of the Shareholder's Default.............................16
       5.11.  Filings with the SEC..................................................16
       5.12.  Subsequent Events; Investment Information.............................16
       5.13.  Pooling of Interests..................................................17
       5.14.  Full Disclosure.......................................................17
       5.15.  Reliance..............................................................17

ARTICLE VI    Covenants of the Shareholder..........................................17
        6.1.  Access to Properties and Records......................................17
        6.2.  Ordinary Course of Business...........................................17
        6.3.  Maintenance of Property...............................................17
        6.4.  No New Material Agreements............................................17
        6.5.  Compensation..........................................................18
        6.6.  Indebtedness..........................................................18
        6.7.  No Securities Issued..................................................18
        6.8.  Repurchase; Dividends.................................................18
        6.9.  Cooperation...........................................................18
       6.10.  Sale of the Westower Shares...........................................18
       6.11.  Disposition of the Westower Shares....................................19
       6.12.  Election to Close Books...............................................19
       6.13.  Confidentiality and Noncompetition....................................19
       6.14.  Audit.................................................................19
</TABLE>

                                     -ii-
<PAGE>
 
<TABLE>
<S>           <C>                                                                   <C>
       6.15.  Subchapter S Matters..................................................19

ARTICLE VII   Covenants of Westower.................................................20
        7.1.  Confidentiality.......................................................20
        7.2.  Westower's Cooperation................................................20
        7.3.  Registration and Listing of the Westower Shares.......................20
        7.4.  Westower SEC Filing Obligations.......................................21
        7.5.  Removal of Legend on Certificates Representing the Westower Shares....21
        7.6.  Election to Close Books...............................................21
        7.7.  Member of the Board of Directors......................................21
        7.8.  Access to Properties and Records......................................22
        7.9.  Cooperation...........................................................22

ARTICLE VIII  Conditions Precedent to the Shareholder's Obligations.................22
        8.1.  Westower's Representations and Warranties.............................22
        8.2.  Delivery of the Westower Documents....................................22
        8.3.  Other Approvals.......................................................22
        8.4.  No Litigation.........................................................22
        8.5.  Waivers and Consents Obtained.........................................23
        8.6.  Pooling of Interests..................................................23

ARTICLE IX    Conditions Precedent to Westower's Obligations........................23
        9.1.  Representations and Warranties........................................23
        9.2.  Delivery of the Shareholder Closing Documents.........................23
        9.3.  Other Approvals.......................................................23
        9.4.  No Litigation.........................................................23
        9.5.  Waivers and Consents Obtained.........................................24
        9.6.  Pooling of Interests..................................................24

ARTICLE X     Indemnification.......................................................24
       10.1.  Indemnification of Westower...........................................24
       10.2.  Indemnification of the Shareholder....................................24
       10.3.  Procedure for Claims..................................................25
       10.4.  Limitation on the Shareholder's Indemnification.......................26
       10.5.  Duration of Representations and Warranties............................26

ARTICLE XI    Termination; Waiver and Amendment.....................................27
       11.1.  Termination...........................................................27
       11.2.  Waiver and Amendment..................................................27

ARTICLE XII   Miscellaneous.........................................................27
       12.1.  Expenses..............................................................27
       12.2.  Exhibits and Schedules Incorporated by Reference......................27
</TABLE>

                                     -iii-
<PAGE>
 
<TABLE>
<S>           <C>                                                                   <C>
       12.3.  Notices...............................................................28
       12.4.  Counterparts..........................................................29
       12.5.  Party in Interest.....................................................29
       12.6.  Entire Agreement; Writing Required to Amend...........................29
       12.7.  Partial Invalidity....................................................29
       12.8.  Headings..............................................................29
       12.9.  Precedence of Documents...............................................29
      12.10.  Assignment............................................................30
      12.11.  Choice of Law.........................................................30
      12.12.  Enforcement Cost......................................................30
      12.13.  Equitable Remedies....................................................30
      12.14.  The Shareholder's Access to Books and Records.........................30
      12.15.  Time of the Essence...................................................30
      12.16.  Joint Approval of Press Release.......................................30
      12.17.  Survival..............................................................31
      12.18.  Construction..........................................................31
      12.19.  Cumulative Rights.....................................................31
</TABLE>

                                     -iv-
<PAGE>
 
                            SHARE EXCHANGE AGREEMENT


     This Share Exchange Agreement (the "Agreement") is entered as of the 31st
day of August, 1998 by TOM T. CUNNINGHAM ("the Shareholder") and WESTOWER
CORPORATION, a Washington corporation ("Westower").

                                    RECITALS

     A.   Westower wishes to acquire from the Shareholder, on the terms and
conditions set forth in this Agreement, all of the issued and outstanding shares
of the capital stock of Standby Services, Inc., a Texas corporation (the
"Company").

     B.   The Shareholder is the owner of 1,000 shares of the common stock, par
value $1.00 per share of the Company (the "Company Shares").

     C.   The Company Shares represent all of the issued and outstanding capital
stock of the Company, and the Shareholder desires to exchange the Company Shares
for shares of the common stock, par value $0.01 per share, of Westower (each
share of such stock being a "Westower Share").

     D.   It is the intent of the parties that the transaction qualify as a
corporate reorganization under Section 368(a)(1)(B) of the Internal Revenue Code
of 1986, as amended (the "Code") and as a "pooling of interests" for financial
accounting purposes.

                                   AGREEMENTS

     NOW, THEREFORE, in consideration of the foregoing recitals and of the
mutual agreements contained herein, the Shareholder and Westower hereby agree as
follows:

                                   ARTICLE I
                                 SHARE EXCHANGE

      1.1.     Exchange of Shares.  Subject to the terms and conditions of this
               ------------------                                              
Agreement, on the Closing Date (as defined below) all of the Company Shares
shall be exchanged for an aggregate of 543,590 Westower Shares.  On the Closing
Date, Westower shall become the holder of record and beneficial owner of all the
issued and outstanding Company Shares.  Moreover, on the Closing Date, Westower
shall direct that its transfer agent issue a certificate for the required number
of the Westower Shares with the restrictions set forth in this Agreement and
deliver the certificate by overnight courier to the Shareholder.
<PAGE>
 
                                   ARTICLE II
                         CLOSING AND CLOSING DOCUMENTS

      2.1.     Date, Time and Place of Closing.  The exchange of the Company
               -------------------------------                              
Shares for the Westower Shares contemplated hereunder shall take place at a
closing (the "Closing") to be held at 11:00 a.m. eastern time on August 31,
1998, or such other date as the parties may agree, at the offices of Morgan,
Lewis & Bockius LLP located at One Logan Square, Philadelphia, Pennsylvania
19103, or at such other place as the parties may mutually agree.  The date on
which the Closing occurs is herein referred to as the "Closing Date."  All
documents required to be delivered or actions to be taken at the Closing shall
be delivered or performed simultaneously, and no delivery shall be considered to
have been made and no action shall be considered to have been performed until
all such deliveries or actions have been completed.  As used herein, the term
"Closing Documents" shall refer to all or any of the documents and certificates
enumerated in Paragraphs 2.2 and 2.3 below.

      2.2.     The Shareholder Closing Documents; Deliveries to Westower.  At
               ---------------------------------------------------------     
the Closing, the Shareholder shall deliver or cause to be delivered to Westower
the following documents (collectively, the "Shareholder Closing Documents"):

          (a) Stock Certificates.  Certificates, executed in blank by the
              ------------------                                         
Shareholder, or certificates accompanied by assignment separate from certificate
executed by the Shareholder, representing all of the Company Shares;

          (b) Company Good Standing Certificate.  A certificate issued by the
              ---------------------------------                              
Secretary of State of Texas indicating that the Company is qualified and in good
standing within such jurisdiction;

          (c) The Shareholder's Certificate.  A certificate signed by the
              -----------------------------                              
Shareholder dated as of the Closing Date in the form attached as Exhibit A
                                                                 ---------
hereto.  Such certificate, if and when delivered, shall for all purposes of this
Agreement constitute an additional representation and warranty of the
Shareholder to the same extent as if made in this Agreement;

          (d) Opinion of the Shareholder's Counsel.  An opinion of Hysinger &
              ------------------------------------                           
Pearson, counsel for the Shareholder, dated as of the Closing Date, in form and
substance to Westower and its counsel, as to the matters set forth in Exhibit B
                                                                      ---------
hereto;

          (e) Employment Agreement.  An Employment Agreement between the Company
              --------------------                                              
and the Shareholder in the form of Exhibit C attached hereto (the "Employment
                                   ---------                                 
Agreement") duly executed by the Shareholder and the Company; and

          (f) Other Instruments.  Such other instruments as may be necessary or
              -----------------                                                
advisable and reasonably required to effect the purposes hereof.

                                       2
<PAGE>
 
      2.3.     Westower Closing Documents; Deliveries to the Shareholder.  At
               ---------------------------------------------------------     
the Closing, Westower shall deliver or cause to be delivered to the Shareholder
the following documents (collectively, the "Westower Closing Documents"):

          (a) Stock Certificate.  A letter dispatched by Westower to Westower's
              -----------------                                                
transfer agent directing that it prepare and deliver by overnight mail to the
Shareholder a certificate representing the Westower Shares;

          (b) Westower Certificate.  A certificate of Westower dated as of the
              --------------------                                            
Closing Date in the form attached as Exhibit D hereto signed by an authorized
                                     ---------                               
officer of Westower.  Such certificate, if and when delivered, shall for all
purposes of this Agreement constitute an additional representation and warranty
of Westower to the same extent as if made in this Agreement;

          (c) Westower Good Standing Certificate.  A certificate issued by the
              ----------------------------------                              
Secretary of State of Washington indicating that Westower is qualified and in
good standing within such jurisdiction;

          (d) Resolutions Authorizing Transaction.  A certificate dated as of
              -----------------------------------                            
the Closing Date signed by the Secretary of Westower evidencing all resolutions
adopted by the Board of Directors of Westower authorizing the transactions
contemplated by this Agreement and the incumbency of officers executing
documents on behalf of Westower;

          (e) Registration Rights Agreement.  A Registration Rights Agreement
              -----------------------------                                  
between Westower and the Shareholder in the form of Exhibit E attached hereto,
                                                    ---------                 
duly executed by Westower; and

          (f) Other Instruments.  Such other instruments as may be necessary or
              -----------------                                                
advisable and reasonably required to effect the purposes hereof.

                                  ARTICLE III
               REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDER
                             CONCERNING THE COMPANY

     Where a representation contained in this Agreement is qualified by the
phrase "to the Shareholder's knowledge" (or words of similar import), such
expression means that, after having conducted a due diligence review, the
Shareholder believes the statement to be true, accurate, and complete in all
material respects.  Knowledge shall not be imputed nor shall it include any
matters which such person should have known or should have been reasonably
expected to have known.  The Shareholder represents and warrants (to the
Shareholder's knowledge, except as to Section 3.6) to Westower as follows:

                                       3
<PAGE>
 
      3.1.     Organization and Authority of the Company.  The Company is a
               -----------------------------------------                   
corporation duly incorporated, validly existing and in good standing under the
laws of the State of Texas and has all requisite corporate power and authority
to own, operate and lease its properties and assets and to carry on its
businesses in the same manner as such businesses are now being conducted.  The
Company is not qualified as a foreign corporation to do business in any other
jurisdiction and is not required to be so qualified.

      3.2.     No Subsidiaries, Partnerships and Joint Ventures.  The Company
               ------------------------------------------------              
owns no equity interest in any corporation, joint venture, partnership or other
entity.

      3.3.     Financial Statements.  Attached hereto as Schedule 3.3 is a
               --------------------                      ------------     
balance sheet of the Company which has been prepared by the Company and dated as
of July 31, 1998 (the "July 31 Balance Sheet") and the statements of operations
for the seven months then ended (collectively, the "July 31 Financial
Statements"), the balance sheets of the Company at December 31 in each of 1997,
1996 and 1995, and the related statements of operations and cash flows of the
Company for each of the years then ended, all of which are unaudited
(collectively, the "Annual Financial Statements").  The July 31 Financial
Statements and the Annual Financial Statements present fairly the financial
position of the Company at the respective dates thereof, and the results of the
Company's operations and cash flows for the periods then ended, all in
accordance with generally accepted accounting principles consistently applied.

      3.4.     No Undisclosed Liabilities.  Except as disclosed on Schedule 3.4
               --------------------------                          ------------
attached hereto, the Company has no material liabilities or obligations of any
nature whatsoever, whether absolute, accrued, contingent, known or unknown and
whether due or to become due, that were not reflected on the July 31 Balance
Sheet (except accrued expenses and accounts payable incurred by the Company in
the ordinary course of business thereafter and obligations under contracts set
forth on Schedule 3.7 attached hereto or not required to be set forth thereon
         ------------                                                        
because of the size or nature thereof), and the Shareholder does not know of any
basis for assertion against the Company of any such liability or obligation.

      3.5.     Dealings with Affiliates.  Except for the contractual agreements
               ------------------------                                        
as listed on Schedule 3.5 attached hereto, the Company does not have, directly
             ------------                                                     
or indirectly, any material contractual arrangements (including any express
written employment agreements) with the Shareholder or any relative of the
Shareholder or any entity controlled by any of them or any officer or director.
Without limiting the generality of the foregoing sentence, except as set forth
on Schedule 3.5 attached hereto, no affiliate, shareholder, officer, director or
   ------------                                                                 
employee of the Company is, directly or indirectly, a joint investor or venturer
with, or owner, lessor, lessee, licensor or licensee of any real or personal
property, tangible or intangible, owned or used by the Company or was or is a
lender to or debtor of the Company.

      3.6.     Taxes.  For purposes of this Agreement, "Tax" means any federal,
               -----                                                           
state, local, or foreign income, gross receipts, license, payroll, employment,
excise, severance, stamp, occupation, premium, windfall profits, environmental
(including taxes under Code section 59A), 
                                       
                                       4
<PAGE>
 
customs duties, capital stock, franchise, profits, withholding, social security
(or similar), unemployment, disability, real property, personal property, sales,
use, transfer, registration, value added, alternative or add-on minimum,
estimated, or other tax of any kind whatsoever, including any interest, penalty,
or addition thereto, whether disputed or not. "Tax Return" means any return,
declaration, report, claim for refund, or information return or statement
relating to Taxes, including any schedule or attachment thereto, and including
any amendment thereof. Except as set forth on Schedule 3.6 attached hereto:
                                              ------------                 

          (a) The Company has filed all Tax Returns that it has been required to
file. All such Tax Returns were correct and complete.  All Taxes owed by the
Company (whether or not shown on any Tax Return) have been paid or properly
accrued.  The Company is not currently the beneficiary of any extension of time
within which to file any Tax Return.  No claim has ever been made by an
authority in a jurisdiction where the Company does not file Tax Returns that it
is or may be subject to taxation by that jurisdiction.  There are no liens on
any of the assets of the Company that arose in connection with any failure (or
alleged failure) to pay any Tax.

          (b) The Company has withheld and paid all Taxes required to have been
withheld and paid in connection with amounts paid or owing to any employee,
independent contractor or other third party.

          (c) There is no dispute or claim concerning any Tax liability of the
Company either (i) claimed or raised by any authority in writing, or (ii) as to
which the Shareholder or any employee responsible for Tax matters of the Company
has knowledge.  No Tax Returns filed with respect to the Company have been
audited or currently are the subject of audit.  The Shareholder has delivered to
Westower correct and complete copies of all federal income and state Tax Returns
filed by the Company since December 31, 1995 and all related examination reports
and statements of deficiencies, if any.

          (d) The Company has not waived any statute of limitations in respect
of Taxes or agreed to any extension of time with respect to a Tax assessment or
deficiency.

          (e) The unpaid Taxes of the Company did not, as of July 31, 1998,
exceed the reserve for Tax liability set forth on the face of the July 31
Balance Sheet.

          (f) The Company has made a valid election to be treated as an S
corporation within the meaning of Section 1361 of the Code ("S Corporation"),
and such election has been in effect for each of the Company's taxable years
since January 1, 1997.  The Company has qualified and will qualify as an S
Corporation at all times from election up to and including the Closing Date.
The Company has not been and will not be subject to any Taxes pursuant to
Section 1363(d) or Section 1374 of the Code at any time up to and including the
Closing Date.

                                       5
<PAGE>
 
      3.7.     Contracts.  Schedule 3.7 attached hereto contains a true and
               ---------   ------------                                    
complete list of all contracts, agreements, arrangements and understandings,
oral or written, to which the Company is a party or by which the Company is
bound which (a) is not entered into in the ordinary course of business, or (b)
are between the Company and the Shareholder or any relative of the Shareholder
or an entity controlled by the Shareholder or any relative of the Shareholder,
including, without limitation, all guaranties, promissory notes and security
agreements, license agreements, purchase and supply agreements, and agreements
relating to the borrowing of money.  Except as set forth on Schedule 3.7, all
                                                            ------------     
such contracts are valid, binding and legal obligations of the Company,
enforceable against the Company in accordance with the terms thereof, except as
the enforceability thereof may be subject to the effect of (y) any applicable
bankruptcy, insolvency, reorganization, moratorium or similar laws relating to
or affecting creditors' rights generally, and (z) general principles of equity
(regardless of whether such enforceability is considered in a proceeding in
equity or at law).  No other party thereto is in default thereunder, nor is
there any event that with notice or lapse of time, or both, would constitute a
default thereunder.  True and complete copies of each such contract entered into
outside the normal course of the Company's business have been delivered to
Westower.  The Company has not received notice, nor is the Company otherwise
aware, that any party to any such contract intends to cancel, terminate or
refuse to renew any such contract or to exercise or decline to exercise any
option or right thereunder.

      3.8.     Intentionally Omitted.
               --------------------- 

      3.9.     Litigation.  Other than as reflected on Schedule 3.9 attached
               ----------                              ------------         
hereto, there are no legal actions, suits, arbitrations, or other legal,
administrative or other governmental proceedings pending or threatened against
the Company and having a material adverse effect on its properties, assets or
business; and the Shareholder is not aware of any facts which to his knowledge
may result in any such action, suit, arbitration, or other proceeding.

      3.10.    No Default.  Neither the execution and delivery of this Agreement
               ----------                                                       
or the Shareholder Closing Documents nor full performance by the Shareholder of
his obligations hereunder or thereunder will violate or breach, or otherwise
constitute or give rise to a default under, the terms or provisions of the
Articles of Incorporation or Bylaws of the Company or, of any contract,
commitment or other obligation included in or necessary for the operation of the
Company's business following the Closing or any other material contract,
commitment, or other obligation to which the Company is a party.

      3.11.    Liabilities.  The Company is not in default under any nonmonetary
               -----------                                                      
provision, note, bond, debenture, mortgage, indenture, security agreement,
guaranty, or other instrument of indebtedness, and no existing condition exists
which, with the giving of notice or the passage of time, or both, would
constitute such a default, in either case, which default is or would be likely
to have a material adverse effect on its business; and the Company is not in
default of any monetary provision of any of the foregoing.

                                       6
<PAGE>
 
      3.12.    Permits and Approvals.  Except as otherwise disclosed on Schedule
               ---------------------                                    --------
3.12 attached hereto, (a) the Company is not in material default under any
- -----                                                                     
permit, approval or qualification, which default is likely to have a material
adverse effect on the Company's business, nor is there any existing condition
which, with the giving of notice or the passage of time, or both, would
constitute such a material default; (b) other than those items listed on
                                                                        
Schedule 3.12, no permit, approval or qualification of any government or
- -------------                                                           
governmental unit, agency, board, body or instrumentality, whether federal,
state or local, is necessary for the conduct of the Company's business as same
has been and is being conducted; and (c) there is no lawsuit or proceeding
pending, or threatened with respect to any of the foregoing.

      3.13.    Intentionally Omitted.
               --------------------- 

      3.14.    Accounts Receivable.  Except as disclosed on Schedule 3.14
               -------------------                          -------------
attached hereto, all accounts receivable of the Company reflected on the July 31
Balance Sheet are bona fide and have arisen in the ordinary course of business.
The July 31 Balance Sheet contains adequate provision for doubtful accounts set
forth on the July 31 Balance Sheet.  Notwithstanding the foregoing, the
Shareholder does not warrant the collectibility of any particular accounts
receivable of the Company reflected on the July 31 Balance Sheet.

      3.15.    Corporate Books and Records.  The Company has furnished to
               ---------------------------                               
Westower's representatives for their examination true and complete copies of (a)
the Company's Articles of Incorporation and Bylaws as currently in effect, (b)
the Company's minute books, which books are complete in all material respects,
and (c) the Company's stock transfer books.  Such minutes reflect all documented
meetings of the Company's shareholders and Board of Directors and any committees
thereof since the Company's inception, and accurately reflect in all material
respects the events of and actions taken at such meetings.

      3.16.    Title to Properties.  Except mortgage loans in an aggregate
               -------------------                                        
amount not exceeding $40,000, the Company holds good title, free and clear of
all mortgages, liens, pledges, charges and encumbrances, to all the properties
and assets reflected on the July 31 Balance Sheet.

      3.17.    Conflicts with Instruments and Laws.  Except as disclosed in
               -----------------------------------                         
Schedule 3.17 attached hereto, neither the execution and delivery of this
- -------------                                                            
Agreement nor the consummation of the transactions contemplated hereby nor
compliance by the Shareholder with any of the provisions hereof will, (a)
conflict with, or result in a breach or contravention of, or in a default or the
creation of any lien under, any of the terms, conditions or provisions of any
note, bond, mortgage indenture, license, agreement or other instrument or
obligation (including without limitation the Company's Articles of Incorporation
and Bylaws) to which the Company is a party or by which it or any of its
properties or assets may be bound, or (b) violate any statute, law, regulation,
order, writ, injunction or decree applicable to the Company or any of its
properties or assets.  No consent, approval or other action by any governmental
authority is required in connection with the execution, delivery and performance
by the Shareholder of this Agreement.

                                       7
<PAGE>
 
      3.18.    Governmental Authorizations.  Except as set forth on Schedule
               ---------------------------                          --------
3.18 attached hereto, the Company has all licenses, permits, clearances and
- ----                                                                       
other authorizations from federal, state and local authorities as are necessary
for the conduct of its business and operations except where the failure to have
such licenses, permits, clearances, and other authorizations would not have a
material adverse effect on the Company's financial position, results of
operation or business.

      3.19.    Claims, Administrative Actions and Lawsuits.  Except as disclosed
               -------------------------------------------                      
in Schedule 3.19 attached hereto and except as to those matters which have been
   -------------                                                               
finally settled or otherwise resolved prior to the date hereof, the Company is
not aware of and has not been served with, any notice or claim by any
governmental agency, customer, employee or any other party whatsoever relating
to (a) any infringement or misappropriation of any patent or other intellectual
property right in connection with performance of the services provided by the
Company and/or any equipment manufactured or sold by the Company; (b) any
environmental claim associated with operations of the Company or the ownership
or operation of any property or properties by the Company; (c) any claim of non-
compliance by the Company under any occupational safety or health law; (d) any
negligence claims or errors and omissions claims with respect to any services
performed by the Company or any goods or products sold by the Company; (e) any
violation of any law or regulation or any term or condition of any permit or
license held by the Company; (f) any workers' compensation statute and any other
applicable equal employment opportunity or discrimination, wage and hour
legislation, collective bargaining agreement, wrongful discharge, personnel or
other employment related statutes, laws or common law rights of any type or
description; or (g) any other litigation of any type related in any way to the
business and operations of the Company.

      3.20.    Leases; No Unowned Assets Utilized.  Schedule 3.20 attached
               ----------------------------------   -------------         
hereto sets forth the real property leases and material personal property leases
of the Company.  Other than the assets leased pursuant to leases listed on
Schedule 3.20, there are no other material assets or properties necessary or
- -------------                                                               
utilized in the business and operations of the Company that are not owned by the
Company.  All of the leases disclosed in Schedule 3.20 hereof are in good
                                         -------------                   
standing and are valid and effective in accordance with their respective terms
and, no material breach or default of the Company or by any other party thereto
exists or has been asserted with respect to any thereof, including but not
limited to a failure on the part of the Company to pay any rents that have
accrued under any such leases.

      3.21.    Insurance.  Schedule 3.21 attached hereto is a certificate of all
               ---------   -------------                                        
policies of fire, liability, title and other forms of insurance held by the
Company.  There are no material claims pending thereunder.  Except as set forth
on Schedule 3.21, all such policies or similar policies have been in force for
   -------------                                                              
at least five years and will be in force on the Closing Date in accordance with
their respective terms, including without limitation, with respect to any
insured losses resulting from occurrences prior to the Closing Date.  The
Company is not in material default with respect to any provisions of any such
policy and has not failed to give any notice or failed to present any material
claim thereunder, as to which it has knowledge, in due and timely fashion.

                                       8
<PAGE>
 
      3.22.    Pooling of Interests.  There are no facts known to the
               --------------------                                  
Shareholder relating to the Company or the Shareholder that preclude the
transactions contemplated by this Agreement from qualifying for "pooling of
interests" accounting treatment.  The Shareholder does not know of any director
or officer of the Company owning shares of Westower.

      3.23.    Absence of Certain Changes or Events.  Except as to matters
               ------------------------------------                       
disclosed in Schedule 3.23 attached hereto, since December 31, 1997, as relates
             -------------                                                     
to the Company, there has not been:

          (a) Any loss, damage or destruction in the nature of a casualty loss
or otherwise, whether covered by insurance or not, of any asset or assets, the
destruction of which, taken singly or in the aggregate is material to the
business and operations of the Company;

          (b) The adoption, promulgation or rescission of any statute,
regulation, order, ordinance or other law, the adoption, promulgation or
rescission of which materially and adversely affects any of the business and
operations of the Company as they are currently being conducted;

          (c) Any failure to maintain the books and records of the Company in
the usual, regular and ordinary manner and in accordance with good business
practice and in accordance with generally accepted accounting principles
consistently applied;

          (d) Except as set forth in paragraph 6.15, no declaration, setting
aside or payment of any dividend, or other distribution, in respect of any
capital stock of the Company or any direct or indirect redemption, purchase or
other acquisition of any capital stock of the Company by or on behalf of the
Company;

          (e) Any issuance or sale by the Company of any of its stock, bonds or
other securities;

          (f) Any labor controversy or the threatening of any strike, work
stoppage or slowdown materially affecting the business or assets of the Company;

          (g) Any sale, sale/lease back transfer, or other disposition of any
material tangible asset of the Company (material for purposes of this paragraph
being any transaction or agreement having a value in excess of $100,000), except
in the ordinary course of business, other than agreements relating to the
purchase and sale of inventory and/or contract equipment in the ordinary course
of business in excess of $100,000, or any sale, assignment, transfer or other
disposition of any of its material patents, trademarks, trade names, brand
names, copyrights, licenses or other intangible assets;

          (h) Any amendment, termination or waiver of any right of material
value belonging to the Company;

                                       9
<PAGE>
 
          (i) Any increase in the compensation payable or to become payable by
the Company to any of its officers, employees or agents, other than normal merit
and cost-of-living increases in accordance with the general prevailing practices
of the Company existing prior to December 31, 1997;

          (j) Any changes in the Company's ordinary and customary practices with
respect to the invoicing of customers, the collection of any accounts
receivable, and payment of any accounts payable; or

          (k) Any material adverse change in the financial position, results of
operations, business or prospects of the Company.

      3.24.    Real Property; Business Locations.  Except for the real property
               ---------------------------------                               
described in Schedule 3.24 attached hereto, the Company has never owned any real
             -------------                                                      
property.  All of the offices, manufacturing facilities and/or warehouse
facilities (collectively, "the Company Facilities" and any of them singly "the
Company Facility") ever maintained or utilized by the Company in the conduct of
any of its business are and on the Closing Date will be located on such property
or the leased properties described on Schedule 3.20 hereof.  The Company has
                                      -------------                         
not, and the owner of any of the Company Facilities has not, heretofore received
any notice of any pending condemnation or similar proceeding or charge affecting
the Company Facilities or any portion thereof, and the Company is not aware that
any such proceeding or charge is contemplated and has not received any notice of
a proposed increase in assessed valuation of any of the Company Facilities.  The
existing water, sewer, gas and electricity lines, storm sewer and other utility
systems on any of the Company Facilities are adequate to serve the utility needs
of such facilities for the business purposes presently conducted thereon; there
are no material structural defects in any of the buildings or other improvements
related to any of the Company Facilities; the heating, electrical, plumbing and
drainage at, or servicing each of the Company Facilities and all facilities and
equipment relating thereto are in working order; the Company has received no
notice that a default exists or breach exists and, to the Company's knowledge,
no default or breach exists under any of the covenants, conditions,
restrictions, rights-of-way or easements affecting any real property associated
with any of the Company Facilities or any portion of any such facilities; and no
fact or condition exists which would result in the termination of the current
access from any of the Company Facilities to any presently existing highways and
roads adjoining or situated on any such facilities.

      3.25.    Environmental Liabilities.  Except as disclosed on Schedule 3.25
               -------------------------                          -------------
attached hereto, in the operation of the business of the Company at any time
prior to the Closing Date, including but not limited to the ownership or
operation of any real properties, the Company (a) has not been in violation of
any common law or any federal foreign, state or local laws, regulations,
statutes or ordinances relating to personal injury arising out of Hazardous
Substances (as such term is hereinafter defined) or protection of the
environment (collectively, the "Environmental Laws"); (b) possesses all of the
material permits, licenses, approvals and identification numbers required under
any Environmental Laws for the operation of each of the Company Facilities in

                                      10
<PAGE>
 
the manner in which any such facility is presently operated; (c) is in
compliance in all material respects with all permits, licenses and approvals
required by any of the Environmental Laws for the operation of each of the
Company Facilities in the manner in which each such facility is currently being
operated, except for such non-compliance as would not be reasonably expected to
lead to imposition of penalties or similar sanctions by regulatory agencies; (d)
is not aware of any conditions that will affect the continued validity after the
Closing Date of all such permits, licenses and approvals required by any
Environmental Laws for the operation of any of the Company Facilities in the
manner in which it is currently being operated; (e) is not aware of the
existence of any pending or threatened suits, proceedings, investigations or
claims with respect to sites of, or the operations conducted at any of the
Company Facilities relating to the enforcement of any Environmental Laws or to
determine the existence of any environmental liabilities; (f) is not aware of
the existence of any pending or threatened suits, proceedings or claims by any
third parties for damages or injunctive relief arising out of the presence of
any emissions, discharges, releases or threatened releases, storage,
transportation or the handling of pollutants, contaminants, regulated wastes or
hazardous wastes (collectively, the "Hazardous Substances") on or off the sites
of any of the Company Facilities allegedly caused, directly or indirectly, by
the operations of the Company at any such facility; (g) is not aware of the
existence of any citizen complaint relating to the site of any of the Company
Facilities or the operations of the Company at any such facility; (h) other than
normal wear and tear on equipment that may alter its performance, is not aware
of any existing circumstances that may interfere with the continued compliance
with any existing permit, license or approval required by statute or regulations
for the operation of any of the Company Facilities in the manner in which it is
presently operated, except for such non-compliance as would not be reasonably
expected to lead to imposition of penalties or similar sanctions by regulatory
agencies; (i) is not aware of the occurrence of any spill discharge, deposit or
other release of any Hazardous Substances, in excess of reportable quantities
under federal or state environmental laws and which has led or is likely to lead
to enforcement actions by governmental agencies, at any of the Company
Facilities caused, directly or indirectly, by the Company; (j) is not aware of
any asbestos conditions at any of the Company Facilities; (k) is not aware of
any transformers, fixtures or other electrical equipment containing PCB's
installed in, affixed to or located at any of the Company Facilities; (l) is not
aware of any storage tanks for petroleum or hazardous substances located at any
of the Company Facilities, whether above ground, underground or within a
structure; (m) is not aware of any current or prior use of the premises of the
Company Facilities which would give rise to liability under any Environmental
Laws; and (n) is not aware of any potential liability under any Environmental
Laws arising out of any pre-Closing utilization of or operations at any of the
Company Facilities by the Company or other third parties and has not been placed
on notice of any claim of any governmental agency or other regulatory body
claiming violation of any Environmental Laws or requiring any remediation or
cleanup with respect to any of the Company Facilities or requiring any change in
the means or methods of operation of any such facility.

      3.26.    Absence of Questionable Payments.  Neither the Company nor any of
               --------------------------------                                 
its directors, officers, agents, employees or any other person acting on behalf
of the Company has used any of the Company's funds for improper or unlawful
contributions, payments, gifts or 

                                      11
<PAGE>
 
entertainment, or made any unlawful expenditures relating to political activity
to governmental officials or others. Neither the Company nor any of its current
directors, officers, agents, employees or any other person acting on behalf of
the Company has accepted or received any improper or unlawful contributions,
payments, gifts or expenditures. The Company has at all times complied, and is
in compliance, with the applicable provisions of the United States Foreign
Corrupt Practices Act, as amended, and other applicable laws and regulations
relating to corrupt practices and similar matters.

      3.27.    The Company's Employees.  Schedule 3.27 attached hereto sets
               -----------------------   -------------                     
forth a list of each employee of the Company and their pay type.  Except as
disclosed on Schedule 3.27, there are no outstanding claims for wages,
             -------------                                            
vacations, or other benefits or compensation of any type or description, whether
currently payable or deferred under any defined benefit pension plan, any
defined contribution pension plan, any implied or deemed employee benefit or
plan, or any welfare plan or otherwise or any other policy, program or practice,
whether formal or informal, by any of the Company's employees or any other
individuals covered by or eligible under such plans or programs, other than
wages that will become due for current pay periods and/or benefits that have
accrued through the Closing Date and will become payable in the future.  There
are no threatened or existing claims by any of the Company's employees with
respect to any applicable workers' compensation, worker health or safety, equal
employment opportunity or discrimination, wage and hour, wrongful discharge,
personnel or other employment related statutes, laws or common law rights of any
type or description.  Except as disclosed on Schedule 3.27, there is no
                                             -------------             
collective bargaining agreement in existence between the Company and a
collective bargaining representative for any of the Company's employees, and
during the one year period immediately preceding the date of this Agreement,
there has not been any union organizing activities or proceedings involving, or
any petitions for election of or demands for recognition by, a labor union or
labor organization as the exclusive bargaining agent for any of the Company's
employees.  The Company has not received notice of any proceeding involving the
Company currently pending before the National Labor Relations Board, including
but not limited to any wherein a labor organization is seeking representation of
any of the Company's employees.

      3.28.    WARN.  The Company has not taken any action which may cause or
               ----                                                          
have the effect of causing any of the provisions of the Worker Adjustment and
Retraining Notification Act to be applied or become applicable to the Company.

      3.29.    Compliance with Laws.  Except as provided in Schedule 3.29
               --------------------                         -------------
attached hereto, the Company has complied in all material respects with and is
currently complying in all material respects with all applicable federal state
and local statutes, regulations, orders, ordinances and other laws material to
the ownership and use of the properties of the Company, the utilization of any
properties leased by the Company and the operation of the business of the
Company.

      3.30.    Employee Benefit Plans.  Except as otherwise disclosed on
               ----------------------                                   
Schedule 3.30 attached hereto, there are no pension, retirement, profit sharing,
- -------------                                                                   
employee stock option or stock 

                                      12
<PAGE>
 
purchase, bonus, deferred compensation, incentive compensation, life insurance,
health insurance, fringe benefits, severance, or other employee or retiree
benefit plans relating or applicable to the Company or to its employees. The
Company has heretofore delivered to Westower true and complete copies of the
documents governing all such plans or arrangements as in effect on the date
hereof. The Company has no plan or commitment, whether formal or informal and
whether legally binding or not, to create any additional such plan or
arrangement or to modify or change any existing plan or arrangement.

      3.31.    Full Disclosure.  No information furnished by the Company to
               ---------------                                             
Westower in connection with this Agreement (including, but not limited to, the
July 31 Financial Statements and the Annual Financial Statements and all
information in the Schedules hereto) is false or misleading in any material
respect.  No representation or warranty by the Shareholder in this Agreement or
in any writing furnished or to be furnished pursuant hereto, contains or will
contain any untrue statement of a material fact, or omits, or will omit to state
any material fact required to make the statements herein or therein contained
not misleading.

      3.32.    Reliance.  The foregoing representations and warranties are made
               --------                                                        
by the Shareholder with the knowledge and expectation that Westower is placing
complete reliance thereon.

                                   ARTICLE IV
               REPRESENTATIONS AND WARRANTIES OF THE SHAREHOLDER
              CONCERNING STOCK, AGREEMENT AND THE WESTOWER SHARES

     The Shareholder further represents and warrants to Westower as follows:

      4.1.     Enforceability.  The Shareholder has full power and authority to
               --------------                                                  
execute, deliver and perform his obligations under this Agreement and to
consummate the transactions contemplated hereby.  This Agreement has been duly
executed and delivered by the Shareholder and constitutes a legal, valid and
binding obligation of the Shareholder, enforceable against him in accordance
with the terms hereof and thereof, except as the enforceability hereof or
thereof may be subject to the effect of (a) any applicable bankruptcy,
insolvency, reorganization, moratorium or similar laws relating to or affecting
creditors' rights generally, and (b) general principles of equity (regardless of
whether such enforceability is considered in a proceeding in equity or at law).

      4.2.     Stock of the Company.  The authorized capital stock of the
               --------------------                                      
Company consists of 1,000 shares of the Company Shares, having a par value of
$1.00 per share, all of which are issued and outstanding, validly issued, fully
paid and non-assessable.  No person has, or has ever had, any preemptive right
to purchase or subscribe for any of the Company Shares or any other securities
of the Company arising out of any issuance or sale by the Company of any shares
of its authorized but unissued common stock or any other securities of the
Company prior to the Closing Date.  There are no outstanding securities of the
Company which are convertible into or 

                                      13
<PAGE>
 
exchangeable for any shares of its capital stock and there is no existing
contract, option, warrant, call or similar commitment of any character granted
or issued by the Company calling for or relating to the issuance or transfer of
shares of capital stock or any other securities of the Company.

      4.3.     Ownership of the Company Shares.  The Shareholder owns and holds
               -------------------------------                                 
of record and beneficially all of the Company Shares.  As such, the Shareholder
has the sole voting or investment power with respect to all of the Company
Shares.  Except for the Company Shares, the Shareholder does not beneficially
own any other equity security of the Company or any options, warrants or other
rights to acquire any equity securities of the Company.  The Shareholder has,
and will convey to Westower hereunder, good title to the Company Shares free and
clear of all claims, liens, charges and encumbrances of any nature whatsoever,
except those imposed by applicable securities laws.

      4.4.     Investment Intent.  The Westower Shares are being acquired by the
               -----------------                                                
Shareholder for investment, for his own account, not as a nominee or agent and
not with a view to any distribution, sale or subdivision thereof.

      4.5.     No Current Registration of the Westower Shares.  The Shareholder
               ----------------------------------------------                  
acknowledges and understands that the Westower Shares have not been registered
with the Securities and Exchange Commission (the "SEC") or with any state
official or agency and are being offered and issued pursuant to an exemption
from registrations set forth in the Securities Act of 1933, as amended (the
"Securities Act") and applicable state blue sky or securities laws, and that no
governmental agency has recommended or endorsed the Westower Shares or made any
finding or determination relating to the fairness of the share exchange set
forth herein.

      4.6.     Information Related to the Westower Shares.  The Shareholder is
               ------------------------------------------                     
an "accredited investor" as defined in Rule 501 under the Securities Act.  The
Shareholder has received and had an opportunity to review Westower's Post-
Effective Amendment No. 1 to its Registration Statement on Form SB-2 filed with
the SEC on August 7, 1998 and Current Report on Form 8K/A filed with the SEC on
August 14, 1998 (the "Westower SEC Filing").

                                   ARTICLE V
                   REPRESENTATIONS AND WARRANTIES OF WESTOWER

     Where a representation contained in this Agreement is qualified by the
phrase "to Westower's knowledge" (or words of similar import), such expression
means that the chief executive officer and the chief financial officer believe
the statement to be true, accurate, and complete in all material respects.
Knowledge shall not be imputed nor shall it include any matters which such
person should have known or should have been reasonably expected to have known.
Westower represents and warrants (to Westower's knowledge) to the Shareholder as
follows:
                                      14
<PAGE>
 
      5.1.     Organization and Existence.  Westower is a corporation duly
               --------------------------                                 
organized, validly existing, and in good standing under the laws of the State of
Washington and is duly qualified to do business as a foreign corporation in all
other states where the nature of Westower's business requires such
qualification.

      5.2.     Power and Authority.  Westower has full corporate power and
               -------------------                                        
authority to execute, deliver, and perform this Agreement and all other
agreements, certificates or documents to be delivered in connection herewith,
including, without limitation, the other agreements, certificates and documents
contemplated hereby (collectively, the "Westower Closing Documents").  Westower
has full corporate power and authority to own, lease and operate its assets and
to conduct its businesses as same are currently being conducted.

      5.3.     Authorization.  The execution, delivery and performance of this
               -------------                                                  
Agreement and all of the Westower Closing Documents, by Westower have been duly
authorized by all requisite corporate action.

      5.4.     Binding Effect.  Upon execution and delivery by Westower, this
               --------------                                                
Agreement and the Westower Closing Documents will be and constitute the valid,
binding and legal obligations of Westower, enforceable against Westower in
accordance with the terms hereof and thereof, except as the enforceability
hereof or thereof may be subject to the effect of (a) any applicable bankruptcy,
insolvency, reorganization, moratorium or similar laws relating to or affecting
creditors' rights generally, and (b) general principles of equity (regardless of
whether such enforceability is considered in a proceeding in equity or at law).

      5.5.     Capitalization.  Westower is authorized by its Articles of
               --------------                                            
Incorporation to issue 10,000,000 shares of common stock, $.01 par value per
share, of which 6,139,912 were outstanding on August 28, 1998.  All outstanding
shares are duly and validly issued, fully paid, and non-assessable, and all were
issued free of any preemptive rights.

      5.6.     Westower Shares.  The Westower Shares, when issued, delivered and
               ---------------                                                  
exchanged for the Company Shares in accordance with this Agreement, will be duly
and validly issued, fully paid and nonassessable, and will not have been issued
in violation of or subject to any preemptive rights, free and clear of all
claims, liens, charges and encumbrances of any nature whatsoever, except those
imposed by applicable securities laws and this Agreement.

      5.7.     Westower Financial Statements.  The financial statements of
               -----------------------------                              
Westower contained in the Westower SEC Filing (collectively, the"Westower
Financial Statements") fairly present the financial position of Westower at the
dates thereof and the results of its operations for the periods therein
specified; in accordance with generally accepted accounting principles
consistently applied except as may be noted therein.

      5.8.     No Default.  Neither the execution and delivery of this Agreement
               ----------                                                       
or the Westower Closing Documents nor full performance by Westower of its
obligations hereunder or 

                                      15
<PAGE>
 
thereunder will violate or breach, or otherwise constitute or give rise to a
default under, the terms or provisions of the Articles of Incorporation or
Bylaws of Westower or, subject to obtaining any and all necessary consents, of
any contract, commitment or other obligation included in or necessary for the
operation of the Westower's business following the Closing or any other material
contract, commitment, or other obligation to which Westower is a party.

      5.9.     No Consents.  No consent, approval or authorization of, or
               -----------                                               
registration, declaration or filing with any third party, including, but not
limited to, any governmental department, agency, commission or other
instrumentality, except those, if any, as are delivered or obtained on or prior
to the Closing, is required to be obtained or made by Westower prior to the
Closing to authorize the execution, delivery and performance by Westower of this
Agreement or the Westower Closing Documents.

      5.10.    No Knowledge of the Shareholder's Default.  Westower has no
               -----------------------------------------                  
knowledge that any of the Shareholder's representations and warranties contained
in this Agreement or the Shareholder Closing Documents are untrue, inaccurate or
incomplete in any material respect or that the Shareholder is in default under
any term or provision of this Agreement or the Shareholder Closing Documents.

      5.11.    Filings with the SEC.  Except as may have been disclosed to the
               --------------------                                           
Shareholder, Westower has made all filings with the SEC that it has been
required to make under the Securities Act and the Securities Exchange Act of
1934, as amended (the "Exchange Act").  The filings pursuant to the Securities
Act and the Exchange Act are collectively referred to as  the "Public Reports."
Each of the Public Reports has complied with the Securities Act and the Exchange
Act in all material respects.  None of the Public Reports, as of their
respective dates, contained any untrue statement of a material fact or omitted
to state a material fact necessary in order to make the statements made therein,
in light of the circumstances under which they were made, not misleading.

      5.12.    Subsequent Events; Investment Information.  Subsequent to the
               -----------------------------------------                    
respective dates as of which information is given in the Public Reports, there
has been no material adverse change or any fact known to Westower and not
disclosed to the Shareholder that could reasonably be expected to result in a
material adverse change in the business or financial condition of Westower, and,
except as disclosed in the Public Reports, there is no litigation or
governmental proceeding to which Westower is a party or to which any property of
Westower is subject or that is pending or, to the knowledge of Westower,
contemplated against Westower that Westower reasonably expects to result in any
material adverse change in the business or financial condition of Westower.  The
Westower SEC Filing does not contain any untrue statement of a material fact or
omit to state a material fact necessary in order to make the statements made
therein, in light of the circumstances under which they were made, not
misleading.

                                      16
<PAGE>
 
      5.13.    Pooling of Interests.  There are no facts known to Westower that
               --------------------                                            
preclude the transactions contemplated by this Agreement from qualifying for
"pooling of interests" accounting treatment.

      5.14.    Full Disclosure.  No information furnished by Westower to the
               ---------------                                              
Shareholder in connection with this Agreement (including, but not limited to,
the Westower Financial Statements) is false or misleading in any material
respect.  No representation or warranty by Westower in this Agreement or in any
writing furnished or to be furnished pursuant hereto, contains or will contain
any untrue statement of a material fact, or omits, or will omit to state any
material fact required to make the statements herein or therein contained not
misleading.

      5.15.    Reliance.  The foregoing representations and warranties are made
               --------                                                        
by Westower with the knowledge and expectation that the Shareholder is placing
complete reliance thereon.

                                   ARTICLE VI
                          COVENANTS OF THE SHAREHOLDER

     Except as to the covenants in Paragraphs 6.10 through 6.14 that apply post-
Closing, the Shareholder hereby covenants and agrees from the date hereof to the
Closing Date that, except for transactions expressly authorized by this
Agreement, including transactions consented to in writing by Westower, he will
cause the Company to comply with the following:

      6.1.     Access to Properties and Records.  The Company will afford to the
               --------------------------------                                 
authorized representatives of Westower such reasonable access during regular
business hours to the properties, books and records of the Company as Westower
may from time to time reasonably request by prior notice.

      6.2.     Ordinary Course of Business.  The Company will operate its
               ---------------------------                               
business substantially as now operated and only in the ordinary course, and, to
the extent consistent with such operation, it will use its best efforts to
preserve intact its present business organization, to keep available the
services of its present officers and key employees and to preserve its
relationships with persons having business dealings with it.  The Company will
maintain its books, accounts and records in the usual, regular and ordinary
manner in accordance with generally accepted accounting principles consistently
applied.

      6.3.     Maintenance of Property.  The Company will maintain all of its
               -----------------------                                       
assets in customary repair, order and condition, reasonable wear and use and
damage by unavoidable casualty excepted, and take all steps reasonably necessary
to maintain its intangible assets, including without limitation, its patents,
trademarks, tradenames, brand names, copyrights and any pending applications
therefor.

      6.4.     No New Material Agreements.  The Company will not enter into any
               --------------------------                                      
material leases, sale/leaseback transactions, agreements for the purchase of
fixed assets, exclusive services 

                                      17
<PAGE>
 
agreements, or other material agreements, other than agreements relating to the
purchase and sale of inventory and/or contract equipment in the ordinary course
of business.

      6.5.     Compensation.  The Company will not (a) grant any increase in
               ------------                                                 
compensation other than normal merit and cost-of-living increases in accordance
with the Company's general prevailing practices existing prior to the date of
this Agreement to any officer, employee or agent, or (b) enter into or amend any
bonus, incentive compensation, deferred compensation, profit sharing,
retirement, pension, group insurance, death benefit or other fringe benefit
plan, trust agreement, or arrangement, or any employment, compensation or
consulting agreement except as required by law.

      6.6.     Indebtedness.  The Company will not create, incur, assume
               ------------                                             
guarantee or otherwise become liable with respect to any indebtedness for money
borrowed or voluntarily create, incur, assume or guarantee any other
indebtedness or obligation other than in the ordinary course of business.

      6.7.     No Securities Issued.  The Company will not issue any shares of
               --------------------                                           
its capital stock or enter into any contract, or grant any option, warrant or
right, calling for the issuance of any shares, and will not create any
securities convertible into any such shares or convertible into securities in
turn so convertible, or enter into any contract, or grant any option, warrant or
right, calling for the issuance of any such convertible security.

      6.8.     Repurchase; Dividends.  The Company will not redeem, repurchase
               ---------------------                                          
or otherwise acquire any capital stock of the Company, or, without the consent
of Westower, declare or pay any dividend in cash, securities or other property,
except for the dividend to be declared and paid to the Shareholder as described
in Paragraph 3.23(d) hereof.

      6.9.     Cooperation.  The Shareholder will cooperate and will cause the
               -----------                                                    
Company to cooperate fully with Westower in promptly taking any and all actions
or executing any and all documents appropriate to consummate the transactions
contemplated by this Agreement.

      6.10.    Sale of the Westower Shares.  The Shareholder agrees that he will
               ---------------------------                                      
not sell, pledge or otherwise transfer any of the Westower Shares received by
him until such time as permitted under Rule 144 under the Securities Act ("Rule
144") or a registration statement with respect to the Westower Shares filed by
Westower pursuant to the provisions of Paragraph 7.3 below becomes effective.
The Shareholder understands that stop-transfer instructions will be given to
Westower's transfer agent with respect to the certificates evidencing the
Westower Shares delivered to him hereunder.  In order to evidence the agreement
described in this paragraph, and the provisions described in Paragraph 6.11
hereof, the Shareholder further agrees that the following legend may be placed
by Westower upon the certificates representing the Westower Shares delivered to
him hereunder:

                                      18
<PAGE>
 
     THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
     THE SECURITIES ACT OF 1933 BUT HAVE BEEN ACQUIRED FOR INVESTMENT BY THE
     REGISTERED OWNER.  NO SALE, PLEDGE OR OTHER TRANSFER MAY BE MADE UNLESS THE
     CORPORATION IS FURNISHED WITH AN OPINION OF COUNSEL FOR THE SHAREHOLDER IN
     FORM AND SUBSTANCE SATISFACTORY TO THE CORPORATION THAT SUCH SALE IS IN
     COMPLIANCE WITH THE SECURITIES ACT OF 1933 AND APPLICABLE STATE SECURITIES
     LAWS.  IN ADDITION, THE TRANSFER OF THESE SHARES IS RESTRICTED UNTIL THE
     CORPORATION HAS PUBLICLY RELEASED ITS FIRST REPORT INCLUDING THE COMBINED
     FINANCIAL RESULTS OF THE CORPORATION AND STANDBY SERVICES, INC. FOR A
     PERIOD OF AT LEAST 30 DAYS OF COMBINED OPERATIONS.

      6.11.    Disposition of the Westower Shares.  Notwithstanding anything
               ----------------------------------                           
herein contained to the contrary, the Shareholder will not sell, transfer or
otherwise dispose of any of the Westower Shares, or any option, right or other
interest with respect to the Westower Shares that the Shareholder will acquire
pursuant to this Agreement, or any securities that may be paid as a dividend
thereon or with respect thereto or issued or delivered in exchange or
substitution therefor, or offer or agree to sell, transfer or otherwise dispose
of, or in any other way reduce the Shareholder's risk of ownership or investment
in the Westower Shares until Westower has publicly released its first report
including the combined financial results of Westower and the Company for a
period of at least 30 days of combined operations.  After the release of the
report described in the immediately preceding sentence, certificates evidencing
the Westower Shares delivered at or after the Closing Date, may at the
Shareholder's election, be surrendered for cancellation and reissuance with a
legend relating only to the restriction on the transfer of the Westower Shares
pursuant to the Securities Act.

      6.12.    Election to Close Books.  The Shareholder agrees that promptly
               -----------------------                                       
following the Closing he will take whatever steps are necessary to cause the
Company to sign and deliver to the Internal Revenue Service an Election to Close
Books Upon S Corporation Termination and will execute the Consent of the
Shareholder to such election.

      6.13.    Confidentiality and Noncompetition.  The Shareholder agrees to
               ----------------------------------                            
comply with the covenants of the Shareholder set forth in Paragraphs 3 and 4 of
the Employment Agreement set forth in Exhibit C attached hereto, the provisions
                                      ---------                                
of which are incorporated herein by reference.

      6.14.    Audit.  The Shareholder will cooperate fully (including delivery
               -----                                                           
of representation letters in a form customarily required of management) with
independent auditors designated by Westower to allow such auditors to audit
financial statements of the Company referred to in paragraph 3.3 and deliver an
opinion of the type required by the rules and regulations of the SEC.

      6.15.    Subchapter S Matters.
               -------------------- 

          (a) Prior to the Closing, the Company will issue a promissory note
(the "Income Tax Note") to the Shareholder in an amount equal to the tax payable
by the Shareholder in respect of the Company's taxable income for the period
January 1, 1998 to August 31, 1998 

                                      19
<PAGE>
 
(the "Income Period") less $500,000 (the amount heretofore distributed to the
Shareholder in respect thereof). The Income Tax Note shall be payable on or
before October 30, 1998.

          (b) Within 30 days after the Closing Date, the Shareholder will
calculate his taxable income with respect to operations of the Company for the
Income Period.  Westower shall be given a reasonable opportunity to review such
calculations.  The Shareholder will prepare a Subchapter S tax return for the
Income Period.  The tax liability for the Shareholder will be calculated using a
39.6% tax rate.  When the tax liability has been established, the Shareholder
will notify Westower of the amount (if any) by which such tax liability differs
from the amount of the Income Tax Note.  If the tax liability as so determined
exceeds the amount of the Income Tax Note, the Shareholder shall be entitled to
payment of such amount on or before October 30, 1998.  If the tax liability as
so determined is less than the amount of the Income Tax Note, the Shareholder
shall have an obligation to repay to the Company not later than October 31, 1998
any excess amounts received by him.

                                  ARTICLE VII
                             COVENANTS OF WESTOWER

     Westower hereby covenants and agrees:

      7.1.     Confidentiality.  Westower agrees that it will maintain in
               ---------------                                           
confidence and neither disclose to any third party nor make commercial use of
all or any part of any information disclosed by the Shareholder or the Company
in connection with the transactions contemplated hereunder; provided, however,
that the obligations contained in this paragraph shall not apply to such
portions of such information which were known to Westower without obligation of
confidentiality prior to disclosure to Westower by the Shareholder or the
Company, as the case may be, as demonstrated by competent documentary evidence
in Westower's possession, or which properly became available to Westower, under
conditions which do not restrict further disclosure, from a third party source
who shall not have obtained such information either directly or indirectly from
the Shareholder or the Company or which now or hereafter comes into the public
domain without fault on the part of Westower, or its employees.  With respect to
information disclosed to Westower related to the business and operations of the
Company, the foregoing obligation of confidentiality shall apply prior to the
Closing of the transactions contemplated by this Agreement, or, if no such
Closing takes place, for a period of five years from the date of this Agreement.

      7.2.     Westower's Cooperation.  Westower will cooperate fully with the
               ----------------------                                         
Shareholder and the Company in promptly taking any and all actions or executing
any and all documents appropriate to consummate the transactions contemplated by
this Agreement.

      7.3.     Registration and Listing of the Westower Shares.  Westower will
               -----------------------------------------------                
use all commercially reasonable efforts to file with the SEC a registration
statement for the Westower Shares delivered to the Shareholder hereunder
pursuant to the Securities Act, as provided in the 

                                      20
<PAGE>

Registration Rights Agreement between the Shareholder and Westower described in
Exhibit F attached hereto. To the extent that any of the Westower Shares are not
- ---------
listed on the American Stock Exchange on the date of this Agreement, Westower
shall file with the American Stock Exchange a listing application with respect
to such shares.
 
      7.4.     Westower SEC Filing Obligations.  With a view to making available
               -------------------------------                                  
the benefits of certain rules and regulations of the SEC which may at any time
permit the sale of any of the Westower Shares which may be restricted as defined
in Rule 144 to the public without registration pursuant to the Securities Act,
Westower agrees to use its best lawful efforts to:

          (a) Make and keep public information available, as those terms are
understood and defined in Rule 144 at all times during which Westower is subject
to the reporting requirements of the Exchange Act;

          (b) File with the SEC in a timely manner all reports and other
documents required of Westower under the Securities Act and the Exchange Act (at
all times during which Westower is subject to such reporting requirements); and

          (c) So long as the Shareholder owns any of the Westower Shares as
restricted securities as defined in Rule 144, to furnish to the Shareholder upon
request a written statement to Westower as to its compliance with the reporting
requirements of Rule 144 and with regard to the Securities Act and the Exchange
Act (at all times during which Westower is subject to such reporting
requirements), a copy of the most recent annual or quarterly report of Westower,
and such other reports and documents of Westower and other information in the
possession of or reasonably obtainable by Westower as the Shareholder may
reasonably request in availing himself of any rule or regulation of the SEC
allowing the Shareholder to sell any of the Westower Shares without registration
pursuant to the Securities Act.

      7.5.     Removal of Legend on Certificates Representing the Westower
               -----------------------------------------------------------
Shares. Westower shall promptly remove the legend on any certificates
- ------                                                               
representing the Westower Shares once the provisions of this Agreement and the
Securities Act are satisfied.  In addition, Westower shall notify its transfer
agent that any stop-transfer instructions with respect to the Westower Shares
have been rescinded.

      7.6.     Election to Close Books.  Westower agrees that promptly following
               -----------------------                                          
the Closing it will cooperate in efforts, or cause the Company, to sign and
deliver to the Internal Revenue Service the Election to Close Books Upon S
Corporation Termination and will execute the Consent of the Shareholder to such
election.

      7.7.     Member of the Board of Directors.  Promptly after the Closing
               --------------------------------                             
Date, Westower will take such action as may be necessary to appoint Shareholder
as a member of the Board of Directors, and Westower will nominate Shareholder as
a director at its next Annual Meeting of 

                                      21
<PAGE>
 
Shareholders and thereafter for so long as Shareholder is employed by the
Company and the Company is a subsidiary of Westower.

      7.8.     Access to Properties and Records.  From the date hereof to the
               --------------------------------                              
Closing Date, Westower will afford to the authorized representatives of the
Shareholder such reasonable access during regular business hours to the
properties, books and records of Westower as the Shareholder may from time to
time reasonably request by prior notice.

      7.9.     Cooperation.  From the date hereof to the Closing Date, Westower
               -----------                                                     
will cooperate fully with the Shareholder in promptly taking any and all actions
or executing any and all documents appropriate to consummate the transactions
contemplated by this Agreement.

                                  ARTICLE VIII
             CONDITIONS PRECEDENT TO THE SHAREHOLDER'S OBLIGATIONS

     The obligations of the Shareholder to consummate the transactions provided
for in this Agreement are, at the option of the Shareholder, subject to
satisfaction of the following conditions at or before the Closing Date:

      8.1.     Westower's Representations and Warranties.  All the covenants,
               -----------------------------------------                     
terms and conditions of this Agreement to be complied with or performed by
Westower at or before the Closing Date shall have been complied with and
performed in all material respects.  The representations and warranties made by
Westower in this Agreement shall be true and correct in all material respects at
and as of the Closing Date with the same force and effect as though such
representations and warranties had been made at and as of the Closing Date,
except that any representation or warranty that by its terms is made with
reference to a specific date shall have been correct in all material respects as
of such date.  A representation or warranty that is expressly subject to a
materiality limitation shall not be subject to a further materiality limitation
as a result of the use of the phrase "in all material respects" in the preceding
sentence.

      8.2.     Delivery of the Westower Documents.  Westower shall have duly
               ----------------------------------                           
executed and delivered, or caused to be executed and delivered, to the
Shareholder, this Agreement and the Westower Closing Documents.

      8.3.     Other Approvals.  All authorizations, consents, orders or
               ---------------                                          
approvals of any federal or state governmental agency necessary for the
consummation of the transactions contemplated hereby (other than such actions,
approvals or filings which, pursuant to the terms of this Agreement, are to take
place on or after the Closing) shall have been filed, occurred or been obtained.

      8.4.     No Litigation.  No administrative investigation, action, suit or
               -------------                                                   
proceeding seeking to enjoin the consummation of the transactions contemplated
under this Agreement shall be pending or threatened.

                                      22
<PAGE>
 
      8.5.     Waivers and Consents Obtained.  Westower shall have obtained all
               -----------------------------                                   
such consents, waivers, orders and approvals, as may be necessary so as to cure,
resolve or otherwise avoid any conflict, breach or default, lien creation or
violation that would have been caused by consummation of the transactions
contemplated hereunder had such consents, waivers, orders and approvals not been
obtained.

      8.6.     Pooling of Interests.  Neither Westower nor its affiliates shall
               --------------------                                            
have taken any action inconsistent with accounting for the transactions
contemplated by this Agreement as a pooling of interests, and Moss Adams LLP
shall have advised Westower in writing that the transactions contemplated by
this Agreement can be accounted for under the "pooling of interests" method.

                                   ARTICLE IX
                  CONDITIONS PRECEDENT TO WESTOWER'S OBLIGATIONS

     The obligation of Westower to consummate the transactions provided for in
this Agreement are, at the option of Westower, subject to satisfaction of the
following conditions at or before the Closing Date:

      9.1.     Representations and Warranties.  All the covenants, terms and
               ------------------------------                               
conditions of this Agreement to be complied with or performed by the Shareholder
on or before the Closing Date shall have been complied with and performed in all
material respects.  The representations and warranties made by the Shareholder
in this Agreement shall be true and correct in all material respects at and as
of the Closing Date with the same force and effect as though such
representations and warranties had been made at and as of the Closing Date,
except that any representation or warranty that by its terms is made with
reference to a specific date shall have been correct in all material respects as
of such date.  A representation or warranty that is expressly subject to a
materiality limitation shall not be subject to a further materiality limitation
as a result of the use of the phrase "in all material respects" in the preceding
sentence.

      9.2.     Delivery of the Shareholder Closing Documents.  The Shareholder
               ---------------------------------------------                  
shall have duly executed and delivered, or caused to be executed and delivered,
to Westower this Agreement and the Shareholder Closing Documents.

      9.3.     Other Approvals.  All authorizations, consents, orders or
               ---------------                                          
approvals of any federal or state governmental agency necessary for the
consummation of the transactions contemplated hereby (other than such actions,
approvals or filings which, pursuant to the terms of this Agreement, are to take
place on or after the Closing) shall have been filed, occurred or been obtained.

      9.4.     No Litigation.  No administrative investigation, action, suit or
               -------------                                                   
proceeding seeking to enjoin the consummation of the transactions contemplated
under this Agreement shall be pending or threatened.
                                   
                                      23
<PAGE>
 
      9.5.     Waivers and Consents Obtained.  The Shareholder shall have
               -----------------------------                             
obtained all such consents, waivers, orders and approvals related to those
matters listed on Schedule 3.17 hereof, as may be necessary so as to cure,
                  -------------                                           
resolve or otherwise avoid any conflict, breach or default, lien creation or
violation that would have been caused by consummation of the transactions
contemplated hereunder had such consents, waivers, orders and approvals not been
obtained.

      9.6.     Pooling of Interests.  The Shareholder and the Company or its
               --------------------                                         
affiliates shall not have taken any action inconsistent with accounting for the
transactions contemplated by this Agreement as a pooling of interests, and Moss
Adams LLP shall have advised Westower in writing that the transactions
contemplated by this Agreement can be accounted for under the "pooling of
interests" method.

                                   ARTICLE X
                                INDEMNIFICATION

      10.1.    Indemnification of Westower.  Subject to the consummation of the
               ---------------------------                                     
Closing and the limitation set forth in Paragraph 10.4 hereof, the Shareholder
will indemnify, defend, and hold Westower, its subsidiaries and affiliates and
their respective officers, directors and employees (the "Westower Indemnified
Parties"), harmless from and against any and all Damages (as hereinafter
defined) arising out of or resulting from any of the following:

          (a) The inaccuracy of any representation or the breach of any warranty
by the Shareholder contained in this Agreement or the Shareholder Closing
Documents; and

          (b) The breach or default by the Shareholder of any covenant contained
in this Agreement or the Shareholder Closing Documents.

     The term "Damages," as used herein, shall include any claim, action, loss,
cost, expense, liability, penalty or interest or damage, including, without
limitation, reasonable counsel fees, and all reasonable costs and expenses of
all actions, suits, proceedings, demands, assessments, claims and judgments,
resulting from, occurring in connection with, or arising out of any breach of
any representation, warranty or covenant by the Shareholder or Westower made in
this Agreement or in any of the Shareholder Closing Documents or the Westower
Closing Documents.  "Damages" shall not include punitive, exemplary or
consequential damages except those that may be asserted in a Third Party Claim
(as hereinafter defined).

      10.2.    Indemnification of the Shareholder.  Subject to the consummation
               ----------------------------------                              
of the Closing, Westower will indemnify, defend and hold the Shareholder, his
heirs, personal representatives, successors and assigns (the "Shareholder
Indemnified Parties"), harmless from and against any and all Damages, arising
out of or resulting from any of the following:

          (a) The inaccuracy of any representation, or the breach of any
warranty by Westower contained in this Agreement or the Westower Closing
Documents; and

                                      24
<PAGE>
 
          (b) The breach or default by Westower of any covenant contained in
this Agreement or the Westower Closing Documents.

      10.3.    Procedure for Claims.  If either the Westower Indemnified Parties
               --------------------                                             
or the Shareholder Indemnified Parties (the "Claimant") desires to make a claim
against any party obligated to provide indemnification under Paragraph 10.1 or
10.2 hereof, respectively (the "Indemnitor"), with respect to any matter covered
by such indemnification obligation, the procedures for making such claim shall
be as follows:

          (a) Third Party Claims.  If the claim is for indemnification with
              ------------------                                           
respect to any action, suit, proceeding or demand at any time instituted or
asserted against, or made upon, the Claimant by or on the behalf of a third
party (a "Third Party Claim"), the Claimant will give prompt written notice to
the Indemnitor of the institution, assertion or making of the Third Party Claim,
and the nature thereof. Upon delivery of such notice the claim specified herein
shall be deemed to have been made for purposes of this Agreement. The Indemnitor
shall, within 10 days after receipt of such notice, give written notice to the
Claimant as to whether or not the Indemnitor accepts the responsibility to
indemnify the Claimant with respect to the Third Party Claim. If the Indemnitor
accepts the responsibility to indemnify the Claimant with respect to the Third
Party Claim, the Claimant will then grant to the Indemnitor authority, and the
Indemnitor will, subject to restrictions and limitations set forth in applicable
insurance policies, proceed, at its sole expense, to cure, defend, compromise or
settle the Third Party Claim, in the name of the Claimant or otherwise;
provided, however, that any such defense of the Third Party Claim shall be
conducted by counsel reasonably satisfactory to the Claimant, and that the
Indemnitor shall not enter into any final compromise or settlement of the Third
Party Claim without the prior written consent of the Claimant. If the Indemnitor
denies the responsibility to indemnify the Claimant with respect to the Third
Party Claim, or if the Indemnitor fails to respond in a timely manner to the
Claimant's notice of the Third Party Claim or fails to proceed in a diligent and
timely manner to cure, defend, compromise or settle a Third Party Claim for
which it has accepted responsibility pursuant to the foregoing provisions, the
Claimant may then, subject to restrictions and limitations set forth in
applicable insurance policies, proceed to cure, defend, compromise or settle
such Third Party Claim as it shall in its sole discretion deem to be advisable,
without prejudice to any right to indemnification the Claimant may have against
the Indemnitor with respect thereto, whether pursuant to this Agreement or
otherwise, and in such event the liability of the Indemnitor to the Claimant for
indemnification with respect to such Third Party Claim shall be determined by a
final and nonappealable judgment entered by a court of competent jurisdiction,
or by written consent of the Indemnitor.

          (b) Non-Third Party Claims.  If the claim is for indemnification with
              ----------------------                                           
respect to a matter other than a Third Party Claim, the Claimant will give
prompt written notice to the Indemnitor of such claim, setting forth with
reasonable particularity the basis, nature and dollar amount thereof.  Upon
delivery of such notice the claim specified therein shall be deemed to have been
made for purposes of this Agreement.  The Indemnitor shall, within 30 days after
receipt of such notice, give written notice to the Claimant as to whether or not
the Indemnitor 

                                      25
<PAGE>
 
accepts the responsibility to indemnify the Claimant with respect to such claim.
If the Indemnitor accepts the responsibility to indemnify the Claimant with
respect to such claim, the Indemnitor shall immediately pay to the Claimant the
amount set forth in the notice thereof, and upon actual receipt of such payment
by the Claimant such claim shall be deemed to have been satisfied. If the
Indemnitor denies the responsibility to indemnify the Claimant with respect to
such claim, or if the Indemnitor fails to respond in a timely manner to notice
of such claim, the liability of the Indemnitor to the Claimant for
indemnification with respect to such claim shall be determined by a final and
nonappealable judgment entered by a court of competent jurisdiction, or by
written consent of the Indemnitor.

      10.4.    Limitation on the Shareholder's Indemnification.  Notwithstanding
               -----------------------------------------------                  
the provisions of Paragraph 10.2 hereof, the Shareholder will not be obligated
to indemnify, defend or hold Westower harmless from or against liabilities,
damages, losses, claims, costs or expenses arising out of or resulting from
matters described in Paragraph 10.1(a) hereof, except to the extent that (a) the
amount of all such liabilities, damages, losses, claims, costs or expenses
exceeds $250,000, and (b) the total indemnification obligation of the
Shareholder to Westower with respect to matters described in Paragraph 10.1
hereof will in no event obligate the Shareholder to do more than return to
Westower the Westower Shares having a value equal to the amount of such
indemnification obligation if they are still owned by the Shareholder.  If any
of the Westower Shares are not then owned by the Shareholder, then the
Shareholder shall only be required to deliver to Westower the value on the date
of disposition of the Westower Shares disposed of by the Shareholder, plus the
return of any of the Westower Shares still owned by the Shareholder.
Thereafter, the Shareholder shall have no further liability to Westower or any
other party in connection with this Agreement.

      10.5.    Duration of Representations and Warranties.  The representations
               ------------------------------------------                      
and warranties of the Shareholder and the Company herein contained shall survive
the Closing (a) with respect to matters covered by Paragraph 3.6 of this
Agreement, for the period ending on the expiration of the applicable statutes or
limitations, and (b) with respect to all other representations and warranties
contained in Article III of this Agreement, for a period of three years from the
Closing Date.  The representations and warranties of Westower contained shall
survive the Closing for a period of three years from the Closing Date.

     The rights of the Shareholder Indemnified Parties and the Westower
Indemnified Parties under this Article X shall be their exclusive remedy with
respect to any claim for Damages; provided, however, that the foregoing clause
of this sentence shall not be deemed a waiver by any party to this Agreement of
any of its rights or remedies arising by reason of any claim of fraud.

                                      26
<PAGE>
 
                                   ARTICLE XI
                       TERMINATION; WAIVER AND AMENDMENT

      11.1.    Termination.  This Agreement may be terminated in any one of the
               -----------                                                     
following ways:

          (a) At any time on or prior to the Closing Date by the mutual consent
in writing of the Shareholder and Westower; or,

          (b) On the Closing Date (i) by the Shareholder, in writing, if the
conditions set forth in Article VIII above hereof shall not have been met; or
(ii) by Westower, in writing, if the conditions set forth Article IX above shall
not have been met; or,

          (c) By the Shareholder or Westower if the Closing shall not have
occurred on or prior to September 30, 1998.

      11.2.    Waiver and Amendment.
               -------------------- 

          (a) Westower or the Shareholder may at any time extend the time for
the performance of any of the obligations or other acts of any other party
hereto and may waive, with respect to such other party, (i) any inaccuracies in
the representations and warranties contained in this Agreement or in any
document delivered pursuant hereto, (ii) compliance with any of the covenants,
undertakings or agreements, or satisfaction of any of the conditions to its
obligations, contained in this Agreement, or (iii) the performance (including
performance to the satisfaction of a party) of any obligation set out herein.
Any waiver by any party of a condition to its obligation to perform this
Agreement and the subsequent Closing hereunder shall be in writing and shall be
without prejudice to the rights or remedies it may have arising out of any
subsequent or different breach of the same or any other any representation,
warranty, covenant or other agreement hereunder.

          (b) The provisions of this Agreement may not be changed, modified or
amended except by way of a writing duly executed by each of the parties hereto.

                                  ARTICLE XII
                                 MISCELLANEOUS

      12.1.    Expenses.  Each party shall pay its own expenses for the
               --------                                                
preparation and execution of this Agreement and in connection with the
transactions contemplated hereby, whether or not this Agreement goes to Closing
or terminates pursuant to the provisions of Article XI hereof.

      12.2.    Exhibits and Schedules Incorporated by Reference.  All exhibits
               ------------------------------------------------               
and schedules to this Agreement referenced in this Agreement are, by such
reference, incorporated herein.

                                      27
<PAGE>
 
      12.3.    Notices.  Any notice, request, instruction or other document to
               -------                                                        
be given hereunder by any party or parties hereto to the other parties will be
effective upon receipt by the other parties if given in writing, delivered
personally, mailed by registered or certified mail, postage paid, sent by
commercial overnight delivery service, fees prepaid, or sent by confirmed
facsimile transmission to the following addresses or facsimile transmission
numbers:

          (a)  If to the Shareholder, addressed to:

               Mr. Tom T. Cunningham
               Standby Services, Inc.
               1818 Kersten
               Houston, Texas 77043

               Facsimile Transmission Number: 713-467-8479
               Confirmation Number: 713-467-1362

               With a courtesy copy to:

               Larry Hysinger, Esquire
               Hysinger & Pearson
               1100 Louisiana, Suite 3440
               Houston, Texas 77002-5222

               Facsimile Transmission Number: 713-650-0254
               Confirmation Number: 713-650-0255

          (b)  If to Westower, addressed to:

               Mr. Peter Lucas
               Westower Corporation
               2653 151 Place NE
               Redmond, Washington 98052

               Facsimile Transmission Number: 604-576-4855
               Confirmation Number: 604-576-4755

                                      28
<PAGE>
 
               With a courtesy copy to:

               Peter S. Sartorius, Esquire
               Morgan, Lewis & Bockius, LLP
               2000 One Logan Square
               Philadelphia, Pennsylvania 19103-6993

               Facsimile Transmission Number: 215-963-5299
               Confirmation Number: 215-963-5560

     Failure to send a courtesy copy of any notice as provided above shall not
make the provision of such notice defective.  Any party hereto may direct in
writing that notices or courtesy copies thereof be sent to other or additional
addresses by like notice.

      12.4.    Counterparts.  This Agreement may be executed in one or more
               ------------                                                
counterparts, each of which shall be deemed to be an original instrument, but
all of which together shall constitute but one instrument.  Confirmation by
electronic transmission of a facsimile signature page shall be binding on any
party so confirming.

      12.5.    Party in Interest.  This Agreement is made solely for the benefit
               -----------------                                                
of Westower and the Shareholder, and no other person, partnership, trust
association or corporation shall acquire or have any right under or by virtue of
this Agreement.  This Agreement shall be binding on the parties hereto and their
respective successors, heirs and permitted assigns.

      12.6.    Entire Agreement; Writing Required to Amend.  This Agreement,
               -------------------------------------------                  
including the Schedules and Exhibits hereto, constitute the entire agreement
among the parties with respect to the subject matter hereof and supersede all
prior agreements and understandings of the parties in connection therewith.  No
covenant or condition not expressed in this Agreement shall affect or be
effective to interpret, change or restrict this Agreement.

      12.7.    Partial Invalidity.  If any term, provision, covenant or
               ------------------                                      
condition of this Agreement is held by any court of competent jurisdiction to be
invalid, void or unenforceable, the remainder of the provisions hereof shall
continue in full force and effect.

      12.8.    Headings.  The sections headings provided in this Agreement are
               --------                                                       
for convenience only and are in no way intended to affect the meaning or import
of any of the language contained in this Agreement.

      12.9.    Precedence of Documents.  In the event that there is a conflict
               -----------------------                                        
between the terms of this Agreement and any other agreement, document,
instrument and writing executed or entered into by any of the parties hereto
with respect to any of the transactions contemplated by this Agreement, the
terms and conditions of this Agreement shall take precedence.

                                      29
<PAGE>
 
      12.10.   Assignment.  This Agreement may not be assigned by either party,
               ----------                                                      
without the express written approval of the other party hereto, except that
Westower may assign its rights to any successor owner of the Company or all or
substantially all of its assets.

      12.11.   Choice of Law.  This Agreement shall be governed by and construed
               -------------                                                    
according to the laws of the State of Washington.  The federal and state courts
located in King County, Washington shall have the exclusive jurisdiction over
any dispute under this Agreement, and each of the undersigned consents to
personal jurisdiction in such courts.

      12.12.   Enforcement Cost.  If any civil action, arbitration, or other
               ----------------                                             
legal proceeding is brought for the enforcement of this Agreement, or because of
an alleged dispute, breach, default, or misrepresentation in connection with any
provision of this Agreement, the successful or prevailing party shall be
entitled to recover reasonable attorneys' fees, court cost and expenses incurred
in that civil action, arbitration or legal proceeding, in addition to any other
relief to which such party may be entitled.

      12.13.   Equitable Remedies.  Each of the parties acknowledges that the
               ------------------                                            
other party will be irreparably damaged (and damages at law would be an
inadequate remedy) if this Agreement is not specifically enforced.  Therefore,
in the event of a breach or threatened breach by any party of any provision of
this Agreement, then the other parties shall be entitled, in addition to all
other rights or remedies, to an injunction restraining such breach, without
being required to show any actual damage or to post an injunction bond, and/or
to a decree for specific performance of the provisions of this Agreement.

      12.14.   The Shareholder's Access to Books and Records.  Within 10 days of
               ---------------------------------------------                    
receipt of notice in writing of any audit of, or deficiency notice to, the
Company or the Shareholder which Westower receives with respect to Taxes for
periods ending on or prior to the Closing Date, Westower will furnish a copy of
such notice to the Shareholder.  Westower shall cooperate with and give the
Shareholder reasonable access during normal business hours on advance notice to
the records of the Company for the period under examination and shall use its
best efforts to furnish any other documents or instruments necessary to enable
the Shareholder's representatives to properly defend the audit, deficiency or
other proceedings.  If the Shareholder exercise his right to prepare and
prosecute a tax refund claim, Westower will give the Shareholder reasonable
access to the records of the Company and any other documents and instruments
necessary to enable the Shareholder's representatives to properly prepare and
prosecute the refund claim.

      12.15.   Time of the Essence.  Time is of the essence of this Agreement.
               -------------------                                            

      12.16.   Joint Approval of Press Release.  Except as otherwise required by
               -------------------------------                                  
applicable securities laws, all press releases and public announcements related
to this Agreement and the transactions contemplated thereby must be approved in
advance by Westower and the Shareholder.

                                      30
<PAGE>
 
      12.17.   Survival.  Without limiting of any other provision hereof, all
               --------                                                      
provisions of this Agreement which by their terms require or may require
performance after the Closing shall survive the Closing and for such period
following the Closing as may be required for Westower, the Company or the
Shareholder, as the case may be, to fulfill their respective obligations
thereunder; such provisions shall terminate by their terms thereafter.

      12.18.   Construction.  Words of any gender used in this Agreement shall
               ------------                                                   
be held and construed to include any other gender, and words in the singular
number shall be held to include the plural, and vice versa, unless the context
requires otherwise.  In addition, the pronouns used in this Agreement shall be
understood and construed to apply whether the party referred to is an
individual, partnership, joint venture, corporation or an individual or
individuals doing business under a firm or trade name, and the masculine,
feminine and neuter pronouns shall each include the other and may be used
interchangeably with the same meaning.

      12.19.   Cumulative Rights.  The rights and remedies of any party under
               -----------------                                             
this Agreement and the instruments executed or to be executed in connection
herewith, or any of them, shall be cumulative and the exercise or partial
exercise of any such right or remedy shall not preclude the exercise of any
other right or remedy.

                                      31
<PAGE>
 
     IN WITNESS WHEREOF, the parties to this Agreement have duly executed this
Agreement on the date first written above.

                                       /s/ Tom T. Cunningham
                                       ---------------------------------------
                                       TOM T. CUNNINGHAM


                                       WESTOWER CORPORATION



                                       By /s/ Calvin J. Payne
                                       -------------------------------------- 
                                       Calvin J. Payne, Chairman of the Board

                                      32
<PAGE>
 
                                LIST OF EXHIBITS

Exhibit A        The Shareholder's Certificate
Exhibit B        Opinion of the Shareholder's Counsel
Exhibit C        The Employment Agreement
Exhibit D        Westower's Certificate
Exhibit E        Opinion of Westower's Counsel
Exhibit F        The Registration Rights Agreement
<PAGE>
 
                                                                       EXHIBIT A


                         THE SHAREHOLDER'S CERTIFICATE

     The Shareholder (as such term is hereafter defined) hereby certifies, in
connection with the transactions contemplated by the Share Exchange Agreement by
and between TOM T. CUNNINGHAM and WESTOWER CORPORATION, a Washington
corporation, dated as of August 31, 1998 (the "Agreement"), that:

     1.   The covenants, terms and conditions of the Agreement to be complied
with or performed by the Shareholder on or before the date hereof have been
complied with and performed in all material respects.

     2.   The representations and warranties made by the Shareholder in the
Agreement are true and correct in all material respects at and as of the date
hereof, except that any representation or warranty that in accordance with its
terms was made with reference to a specific date was correct in all material
respects as of such date.

Dated: August 31, 1998



                                       -----------------------------------------
                                       TOM T. CUNNINGHAM
<PAGE>
 
                                                                       EXHIBIT B

                      OPINION OF THE SHAREHOLDER'S COUNSEL

                               HYSINGER & PEARSON

                                   ATTORNEYS
                                1100 LOUISIANA 
 (713) 650-0255                    SUITE 3440             FAX (713) 650-0254
                           HOUSTON, TEXAS 77002-5222



August 31, 1998


Westower Corporation
7001 N.E. 40th Avenue
Vancouver, WA  98661

Re:  Acquisition of Stock of Standby Services, Inc. by Westower Corporation
     ----------------------------------------------------------------------

Ladies and Gentlemen:

We have acted as counsel to Tom T. Cunningham (the "Shareholder"), the sole
shareholder of Standby Services, Inc., a Texas corporation ("Standby"), in
connection with the Share Exchange Agreement, dated as of August 31, 1998 (the
"Exchange Agreement"), by and between the Shareholder and Westower Corporation,
a Washington corporation ("Westower").  The Exchange Agreement provides for,
among other things, the exchange of the 1,000 shares of common stock, par value
$1.00 per share, of Standby owned by the Shareholder into an aggregate of
543,590 shares of common stock, par value $.01 per share, of Westower.  We are
furnishing this opinion pursuant to Section 2.2(a) of the Exchange Agreement.
Capitalized terms used herein and not otherwise defined herein shall have the
meanings assigned to them in the Exchange Agreement.

As such counsel, we have examined originals, or copies certified or otherwise
identified to our satisfaction, of the Exchange Agreement, the Registration
Rights Agreement dated as of August 31, 1998 by and between the Shareholder and
Westower, the Employment Agreement dated as of August 31, 1998 by and between
the Shareholder and Standby and such other records and documents, and made such
examinations of fact and law as we deemed necessary to form the basis for our
opinions hereinafter expressed.
<PAGE>
 
Westover Corporation
August 31, 1998
Page 2


In all examinations made by us in connection with this opinion, we have assumed
the genuineness of all signatures, the legal capacity of all persons executing
agreements, instruments or documents, the completeness and authenticity of all
records and documents submitted to us as originals, and the conformity with the
originals of all documents submitted to us as copies.

Based upon the foregoing, subject to the qualifications hereinafter set forth
and recognizing that the Exchange Agreement is governed by the laws of the State
of Washington, a jurisdiction in which we are not admitted to practice, we are
of the opinion as of the date hereof that, assuming the Exchange Agreement was
governed by the laws of the State of Texas:

3.   Standby is a corporation duly incorporated, validly existing and in good
standing under the laws of the State of Texas and has all requisite corporate
power and authority to own, operate and lease its properties and assets and to
carry on its businesses in the same manner as such businesses are now being
conducted.

4.   The Shareholder has full power and authority to execute, deliver and
perform his obligations under the Exchange Agreement and to consummate the
transactions contemplated thereby.  The Exchange Agreement has been duly
executed and delivered by the Shareholder and, to the extent Texas law is
applicable, constitutes a legal, valid and binding obligation of the
Shareholder, enforceable against him in accordance with the terms thereof,
except as the enforceability thereof may be subject to the effect of (a) any
applicable bankruptcy, insolvency, reorganization, moratorium or similar laws
relating to or affecting creditors' rights generally, and (b) general principles
of equity (regardless of whether such enforceability is considered in a
proceeding in equity or at law).

5.   The authorized capital stock of Standby consists of 1,000 shares of common
stock, par value of $1.00 per share (the "Standby Shares"), all of which are
issued and outstanding, validly issued, fully paid and non-assessable.  No
person has, or has ever had, any preemptive right to purchase or subscribe for
any of the Standby Shares or any other securities of Standby arising out of any
issuance or sale by Standby of any shares of its authorized but unissued common
stock or any other securities of Standby prior to the Closing Date.  There are
no outstanding securities of Standby which are convertible into or exchangeable
for any shares of its capital stock and there is no existing contract, option,
warrant, call or similar commitment of any character granted or issued by
Standby calling for or relating to the issuance or transfer of shares of capital
stock or any other securities of Standby.
<PAGE>
 
Westover Corporation
August 31, 1998
Page 3


6.   The Shareholder has conveyed to Westower all of his right, title and
interests in and to the Standby Shares free and clear of all claims, liens,
charges and encumbrances of any nature whatsoever, including, without
limitation, any interest the Shareholder's spouse may have had therein.

The opinions expressed herein are for your sole benefit and may be relied upon
by you only in connection with the transaction described herein.

Very truly yours,
<PAGE>
 
                                                                       EXHIBIT C


                              EMPLOYMENT AGREEMENT


          See Exhibit 2.3 of the Company's Current Report on Form 8-K

                                      C-1
<PAGE>
 
                                                                       EXHIBIT D

                              WESTOWER CERTIFICATE

     The undersigned hereby certifies, in connection with the transactions
contemplated by the Share Exchange Agreement by and between TOM T. CUNNINGHAM
(the "the Shareholder") and WESTOWER CORPORATION, a Washington corporation,
("Westower") dated as of August 31, 1998 (the "Agreement"), that, as to
Westower:

     1.   The covenants, terms and conditions of the Agreement to be complied
with or performed by Westower on or before the date hereof have been complied
with and performed in all material respects.

     2.   The representations and warranties made by Westower in the Agreement
are true and correct in all material respects at and as of the date hereof,
except that any representation or warranty that in accordance with its terms was
made with reference to a specific date was correct in all material respects as
of such date.

Dated: August 31, 1998


                                    WESTOWER CORPORATION


                                     By --------------------------------------
                                        Calvin J. Payne, Chairman of the Board

                                      D-1
<PAGE>
 
                                                                       EXHIBIT E


                         REGISTRATION RIGHTS AGREEMENT


          See Exhibit 2.2 of the Company's Current Report on Form 8-K

                                      E-1

<PAGE>
 
                                                                     EXHIBIT 2.2

                         REGISTRATION RIGHTS AGREEMENT


     THIS AGREEMENT is entered into as of August 31, 1998, by and between
WESTOWER CORPORATION, a Washington corporation ("Westower"), and TOM T.
CUNNINGHAM (the "Shareholder").

     WHEREAS, on even date herewith the parties executed that certain Share
Exchange Agreement (the "Share Exchange Agreement") whereby Westower is
proposing to issue and sell, in exchange for all the issued and outstanding
shares of the stock of Standby Services, Inc., a Texas corporation, newly issued
shares of Westower's common stock (the "Westower Shares") to the Shareholder;
and

     WHEREAS, Westower and the Shareholder desire to enter into this Agreement
to facilitate the exchange between the Shareholder and Westower as called for in
the Share Exchange Agreement;

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto agree as
follows:

     1.   Registration Rights Available.  Pursuant to the terms and conditions
          -----------------------------                                       
contained herein, and in the Share Exchange Agreement, Westower agrees to
provide the Shareholder or any permitted assignee of the Shareholder
(collectively, the "Holder") with the following registration rights with respect
to the Westower Shares and any other securities issued or issuable at any time
or from time to time in respect of the Westower Shares as a result of a stock
split, stock dividend, recapitalization or other similar event involving
Westower (collectively, the "Registrable Securities"): (a) two demand
registration rights by means of shelf registrations pursuant to Rule 415
promulgated under the Securities Act of 1933, as amended (the "Securities Act")
(the "Shelf Registration Rights"), and (b) the right to "piggyback" on a firm
commitment underwritten offering of any securities of Westower other than the
Registrable Securities (the "Piggyback Registration Rights"). The Shelf
Registration Rights and the Piggyback Registration Rights are hereinafter
sometimes collectively referred to as the "Registration Rights."

     2.   Shelf Registration.  With respect to the Shelf Registration Rights,
          ------------------                                                 
the parties agree as follows:

          (a)  Subject to the restrictions of Paragraph 2(b) below, at any time
after 180 days following the date of this Agreement, the Holder may provide
written notice to Westower indicating his intention to exercise a Shelf
Registration Right. Westower shall promptly and in any event within 90 days of
receiving notice from the Holder, use its best efforts to file with the United
States 
<PAGE>
 
Securities and Exchange Commission (the "SEC") and cause to become effective a
registration statement on an appropriate form relating to the offer and sale of
the Registrable Securities owned by the Holder (the "Registration Statement").
Westower agrees to provide the Holder with notice of the filing of the
Registration Statement and of the filing of any amendments or supplements
thereto.

          (b)  Westower agrees to maintain any Registration Statement with
respect to a Shelf Registration Right in effect for nine months or completion of
the offering, whichever is earlier.

          (c)  In any offering pursuant to this paragraph that becomes effective
and in which the Holder participates, Westower shall file all amendments and
supplements under the Securities Act required for that purpose. In any offering
pursuant to this paragraph Westower will, as soon as practicable, use its best
efforts to effect such registration and use its best efforts to effect such
qualification and compliance as may be so requested and as would permit or
facilitate the distribution of the Registrable Securities, including, without
limitation registration under the Securities Act, appropriate qualifications
under applicable blue sky or other state securities laws, appropriate compliance
with any other governmental requirements and listing on a national securities
exchange on which the Registrable Securities are then listed or any inter-dealer
quotation system upon which the Registrable Securities may be quoted.

     3.   Piggyback Registration Rights.  With respect to the Piggyback
          -----------------------------                                
Registration Rights, the parties agree as follows:

          (a)  Subject to Paragraph 3(b), Westower will (i) promptly give to the
Holder written notice of any registration relating to an Underwritten Public
Offering, and (ii) include in such registration (and related qualification under
blue sky laws or other compliance) such of the Holder's Registrable Securities
as are specified in the Holder's written request or requests, mailed in
accordance with the terms of this Agreement within 30 days after the date of
such written notice from Westower.

          (b)  The right of the Holder to registration pursuant to the Piggyback
Registration Rights shall be conditioned upon the Holder's participation in such
underwriting, and the inclusion of the Registrable Securities in the
underwriting shall be limited to the extent provided herein. The Holder shall
(together with Westower) enter into an underwriting agreement in customary form
with the managing underwriter selected for the Underwritten Public Offering by
Westower. Notwithstanding any other provision of this Agreement, if the managing
underwriter determines that marketing factors require a limitation of the number
of the Registrable Securities to be underwritten, the managing underwriter may
limit some or all of the Registrable Securities that may be included in the
registration and the Underwritten Public Offering as follows: the number of the
Registrable Securities that may be included in the registration and the
Underwritten Public Offering by the Holder shall be determined by multiplying
the number of the shares of the Registrable Securities of all selling
shareholders of Westower which the managing underwriter is willing to include in
such registration and the Underwritten Public Offering times a fraction, the
numerator of which is the 

                                       2
<PAGE>
 
number of the Registrable Securities requested to be included in such
registration and the Underwritten Public Offering by the Holder, and the
denominator of which is the total number of the Registrable Securities which all
selling shareholders of Westower have requested to be included in such
registration and the Underwritten Public Offering. To facilitate the allocation
of shares in accordance with the above provisions, Westower may round the number
of shares allocable to any such person to the nearest 100 shares. If the Holder
disapproves of the terms of any such underwriting, it may elect to withdraw
therefrom by written notice to Westower and the managing underwriter, delivered
not less than seven days before the effective date of the Underwritten Public
Offering. Any of the Registrable Securities excluded or withdrawn from the
Underwritten Public Offering shall be withdrawn from such registration, and
shall not be transferred in a public distribution prior to 60 days after the
effective date of the Registration Statement relating thereto, or such other
shorter period of time as the underwriters may require.

     4.   Registration Procedure.  With respect to each of the Registration
          ----------------------                                           
Rights, the following provisions shall apply:

          (a)  The Holder shall be obligated to furnish to Westower and the
underwriters (if any) such information regarding the Registrable Securities and
the proposed manner of distribution of the Registrable Securities as Westower
and the underwriters (if any) may request in writing and as shall be required in
connection with any registration, qualification or compliance referred to herein
and shall otherwise cooperate with Westower and the underwriters (if any) in
connection with such registration, qualification or compliance.

          (b)  With a view to making available the benefits of certain rules and
regulations of the SEC which may at any time permit the sale of any Restricted
Securities (as defined in Rule 144 promulgated under the Securities Act) to the
public without registration, Westower agrees to use its best lawful efforts to:

               (i)    Make and keep public information available, as those terms
are understood and defined in Rule 144 at all times during which Westower is
subject to the reporting requirements of the Securities Exchange Act of 1934, as
amended (the "Exchange Act");

               (ii)   File with the SEC in a timely manner all reports and other
documents required of Westower under the Securities Act and the Exchange Act (at
all times during which Westower is subject to such reporting requirements); and

               (iii)  So long as the Holder owns any Restricted Securities, to
furnish to the Holder upon request a written statement to Westower as to its
compliance with the reporting requirements of Rule 144 and with regard to the
Securities Act and the Exchange Act (at all times during which Westower is
subject to such reporting requirements), a copy of the most recent annual or
quarterly report of Westower, and such other reports and documents of Westower
and other information in the possession of or reasonably obtainable by Westower
as the Holder may 

                                       3
<PAGE>
 
reasonably request in availing itself of any rule or regulation of the SEC
allowing the Holder to sell any Restricted Securities without registration.

          (c)  Westower agrees that it will furnish to the Holder such number of
prospectuses meeting the requirements of Section 10(a)(3) of the Securities Act,
offering circulars or other documents incident to any registration,
qualification or compliance referred to herein as provided or, if not otherwise
provided, as the Holder from time to time may reasonably request.

          (d)  All expenses (except for any underwriting and selling discounts
and commissions and legal fees for the Holder's attorneys) of  any registrations
permitted pursuant to this Agreement and of all other offerings by Westower
(including, but not limited to, the expenses of any qualifications under the
blue sky or other state securities laws and compliance with governmental
requirements of preparing and filing any post-effective amendments required for
the lawful distribution of the Registrable Securities to the public in
connection with such registration, of supplying prospectuses, offering circulars
or other documents) will be paid by Westower.

          (e)  In connection with the preparation and filing of any Registration
Statement under the Securities Act pursuant to this Agreement, Westower will
give the Holder and the Holder's attorneys and accountants, the opportunity to
participate in the preparation of any Registration Statement, each prospectus
included therein or filed with the SEC, and each amendment thereof or supplement
thereto, and will give each of them such access to its books and records and
opportunities to discuss the business of Westower with its officers and the
independent public accountants who have certified its financial statements as
shall be necessary to conduct a reasonable investigation within the meaning of
the Securities Act.

          (f)  Westower shall notify each Holder of Registrable Securities
covered by a Registration Statement, during the time when a prospectus relating
thereto is required to be delivered under the Securities Act, of the happening
of any event as a result of which the prospectus included in the Registration
Statement, as then in effect, includes an untrue statement of a material fact or
omits to state a material fact required to be stated therein or necessary to
make the statements therein not misleading in the light of the circumstances
then existing.

     5.   Blackout Period.  At any time after the effective date of the
          ---------------                                              
Registration Statement, if Westower gives to the Holder a notice pursuant to
Paragraph 4(f) hereof and stating that Westower requires the suspension by the
Holder of the distribution of any of the Registrable Securities, then the
Shareholder shall cease distributing the Registrable Securities for such period
of time (the "Blackout Period"), not to exceed 120 days from the time notice is
sent until Westower informs the Holder that the Blackout Period has been
terminated. Upon notice by Westower to the Holder of such determination, the
Holder will (a) keep the fact of any such notice strictly confidential, (b)
promptly halt any offer, sale, trading or transfer of any of the Registrable
Securities for the duration of the Blackout Period, and (c) promptly halt any
use, publication, dissemination or distribution of each prospectus included
within the Registration Statement, and any amendment or supplement thereto by it
and any of its affiliates for the duration of the Blackout Period.

                                       4
<PAGE>
 
     6.   Lock-Up.  In connection with any Underwritten Public Offering, the
          -------                                                           
Holder agrees, if requested, to execute a lock-up letter addressed to the
managing underwriter in customary form agreeing not to sell or otherwise dispose
of the Registrable Securities owned by the Holder (other than any that may be
included in the offering) for a period not exceeding 180 days.

     7.   Delay of Registration.  No Holder shall have any right to obtain or
          ---------------------                                              
seek an injunction restraining or otherwise delaying any registration of the
Registrable Securities as the result of any controversy that might arise with
respect to the interpretation or implementation of this Agreement.

     8.   Indemnification by Westower.  In the event of any registration of the
          ---------------------------                                          
Registrable Securities of Westower under the Securities Act, pursuant to the
terms of this Agreement, Westower agrees to indemnity and hold harmless the
Holder and each other person who participates as an underwriter in the offering
or sale of the Registrable Securities against any and all claims, demands,
losses, costs, expenses, obligations, liabilities, joint or several, damages,
recoveries and deficiencies, including interest, penalties and attorneys' fees
(collectively the "Claims"), to which the Holder or any such underwriter may
become subject under the Securities Act or otherwise, insofar as the Claims or
actions or proceedings, whether commenced or threatened, in respect thereto
arise out of or are based on any untrue statement or alleged untrue statement of
any material fact contained in any Registration Statement under which the
Holder's Registrable Securities were registered under the Securities Act, any
preliminary prospectus, final prospectus or summary prospectus contained
therein, or any amendment or supplement thereto, or any omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein not misleading, and Westower will
reimburse the Holder and each such underwriter for any legal or other expenses
reasonably incurred by them in connection with investigating or defending any
Claim or action or proceeding in respect thereto; provided that Westower shall
not be liable in any such case to the extent that any Claim or action or
proceeding in respect thereof or expense arises out of or is based on an untrue
statement or alleged untrue statement or omission or alleged omission made in
the Registration Statement, any such preliminary prospectus, final prospectus,
summary prospectus, amendment or supplement in reliance on and in conformity
with written information furnished to Westower through an instrument duly
executed by the Holder specifically stating that it is for use in the
preparation thereof. Such indemnity shall remain in full force and effect
regardless of any investigation made by or on behalf of the Holder or any such
underwriter and survive the transfer of the Registrable Securities by the
Holder.

     9.   Indemnification by the Holder.  Westower may require, as a condition
          -----------------------------                                       
to including the Registrable Securities in any Registration Statement filed
pursuant to this Agreement, that Westower shall have received an undertaking
satisfactory to it from the Holder, to indemnify and hold harmless (in the same
manner and to the same extent as set forth in Paragraph 8 hereof) Westower, each
director and officer of Westower and each other person, if any, who controls
Westower within the meaning of the Securities Act, with respect to any statement
or alleged statement or alleged statement in or omission or alleged omission
from the Registration Statement, any preliminary prospectus contained therein,
or any amendment or supplement thereto, if such statement or alleged statement
or omission or alleged omission was made in reliance on and in 

                                       5
<PAGE>
 
conformity with written information furnished to Westower through an instrument
duly executed by the Holder specifically stating that it is for use in the
preparation of the Registration Statement, preliminary prospectus, final
prospectus, summary prospectus, amendment or supplement. Notwithstanding the
foregoing, the maximum liability hereunder which the Holder shall be required to
suffer shall be limited to the net proceeds to the Holder from the Registrable
Securities sold by the Holder in any such offering. Such indemnity shall remain
in full force and effect, regardless of any investigation made by or on behalf
of Westower or any such director, officer or controlling person and shall
survive the transfer of the Registrable Securities by the Holder.

     10.  Notice of Claims.  Promptly after receipt by an indemnified party of
          ----------------                                                    
notice of the commencement of any action or proceeding involving a Claim, such
indemnified party will, if a claim in respect thereof is to be made against an
indemnifying party, give written notice to the latter of the commencement of
such action, provided that the failure of any indemnified party to give notice
as provided herein shall not relieve the indemnifying party of its obligations
under this Agreement except to the extent that the indemnifying party is
actually prejudiced by such failure to give notice. In case any such action is
brought against an indemnifying party, unless in such indemnified party's
reasonable judgment a conflict of interest between such indemnified and
indemnifying parties may exist in respect of a Claim the indemnifying party
shall be entitled to participate in and to assume the defense thereof, jointly
with any other indemnifying party similarly notified to the extent that it may
wish, with counsel reasonably satisfactory to such indemnified party, and after
notice from the indemnifying party to such indemnified party of its election so
to assume the defense thereof, the indemnifying party shall not be liable to
such indemnified party for any legal or other expenses subsequently incurred by
the latter in connection with the defense thereof other than reasonable costs of
investigation. No indemnifying party shall, without the consent of the
indemnified party, consent to entry of any judgment or enter into any settlement
that does not include as an unconditional term thereof the giving by the
claimant or plaintiff to such indemnified party of a release from all liability
in respect of a Claim.

     11.  Indemnification Payments.  The indemnification required by this
          ------------------------                                       
Agreement shall be made by periodic payments of the amount thereof during the
course of the investigation or defense, as and when bills are received or
expense, loss, damage or liability is incurred.

     12.  Assignment of Registration Rights.  The rights to cause Westower to
          ---------------------------------                                  
register Registrable Securities pursuant to this Agreement may be assigned by
the Shareholder to a transferee or assignee of such securities who shall, upon
such transfer or assignment, be deemed a Holder under this Agreement; provided
that Westower is furnished with written notice of the name and address of such
transferee or assignee and the Registrable Securities with respect to which the
Registration Rights are being assigned; provided, further, that such assignment
shall be effective only if immediately following such transfer the further
disposition of such securities by the transferee or assignee is restricted under
the Securities Act and that such transferee or assignee is either (a) a member
of the immediate family or a trust for the benefit of any Holder that is an
individual or (b) a transferee or assignee that after the transfer or assignment
holds all of the Registrable Securities.

                                       6
<PAGE>
 
     13.  Termination of this Agreement.  This Agreement shall terminate with
          -----------------------------                                      
respect to the Holder when all of the Registrable Securities have been
registered as provided herein; provided, however, that the Registration Rights
contained herein shall not terminate if the Holder makes a registration request
pursuant to this Agreement, which request is currently tolled by reason of one
of the clauses (i) through (iii) in Paragraph 2(b), but shall terminate 15 days
after notice of the suspension of such tolling shall have been given to the
Holder.

     14.  Conflict.  Notwithstanding anything herein contained to the contrary,
          --------                                                             
in the event of any conflict between the terms of the Share Exchange Agreement
or this Agreement, the terms of the Share Exchange Agreement shall control.

     15.  Attorney's Fees.  In the event that it should become necessary for any
          ---------------                                                       
party entitled hereunder to bring suit against any other party to this Agreement
for enforcement of the covenants herein contained, the parties hereby covenant
and agree that the party who is found to be in violation of said covenants shall
also be liable for all reasonable attorney's fees and costs of court incurred by
the other parties hereto.

     16.  Benefit.  All the terms and provisions of this Agreement shall be
          -------                                                          
binding upon and inure to the benefit of and be enforceable by the parties
hereto, and their respective heirs, executors, administrators, personal
representatives, successors and permitted assigns.

     17.  Notices.  Any notice, request, instruction or other document to be
          -------                                                           
given hereunder by any party or parties hereto to the other parties will be
effective upon receipt by the other parties if given in writing, delivered
personally, mailed by registered or certified mail, postage paid, sent by
commercial overnight delivery service, fees prepaid, or sent by confirmed
facsimile transmission to the following addresses or facsimile transmission
numbers:

          (a)  If to Westower, addressed to:

               Mr. Peter Lucas
               Westower Corporation
               7001 N.E. 40th Avenue
               Vancouver, Washington 98661

               Facsimile Transmission Number: 604-576-4855
               Confirmation Number: 604-576-4755

                                       7
<PAGE>
 
               With a courtesy copy to:

               Peter S. Sartorius, Esquire
               Morgan, Lewis & Bockius LLP
               2000 One Logan Square
               Philadelphia, Pennsylvania 19103-6993

               Facsimile Transmission Number: 215-963-5299
               Confirmation Number: 215-963-5560

          (b)  If to the Shareholder, addressed to:

               Mr. Tom T. Cunningham
               Standby Services, Inc.
               1818 Kersten
               Houston, Texas 77043

               Facsimile Transmission Number: 713-467-8479
               Confirmation Number: 713-467- 1362
 
               With a courtesy copy to:

               Larry Hysinger, Esquire
               Hysinger & Pearson
               1100 Louisiana, Suite 3440
               Houston, Texas 77002-5222

               Facsimile Transmission Number: 713-650-0254
               Confirmation Number: 713-650-0255

     Failure to send a courtesy copy of any notice as provided above shall not
make the provision of such notice defective.  Any party hereto may direct in
writing that notices or courtesy copies thereof be sent to other or additional
addresses by like notice.

     18.  Construction.  Words of any gender used in this Agreement shall be
          ------------                                                      
held and construed to include any other gender, and words in the singular number
shall be held to include the plural, and vice versa, unless the context requires
otherwise. In addition, the pronouns used in this Agreement shall be understood
and construed to apply whether the party referred to is an individual,
partnership, joint venture, corporation or an individual or individuals doing
business under a firm or trade name, and the masculine, feminine and neuter
pronouns shall each include the other and may be used interchangeably with the
same meaning.

                                       8
<PAGE>
 
     19.  Waiver.  No course of dealing on the part of any party hereto or its
          ------                                                              
agents, or any failure or delay by any such party with respect to exercising any
right, power or privilege of such party under this Agreement or any instrument
referred to herein shall operate as a waiver thereof, and any single or partial
exercise of any such right, power or privilege shall not preclude any later
exercise thereof or any exercise of any other right, power or privilege
hereunder or thereunder.

     20.  Cumulative Rights.  The rights and remedies of any party under this
          -----------------                                                  
Agreement and the instruments executed or to be executed in connection herewith,
or any of them, shall be cumulative and the exercise or partial exercise of any
such right or remedy shall not preclude the exercise of any other right or
remedy.

     21.  Invalidity.  In the event any one or more of the provisions contained
          ----------                                                           
in this Agreement or in any instrument referred to herein or executed in
connection herewith shall, for any reason, be held to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality, or unenforceability
shall not affect the other provisions of this Agreement or any such other
instrument.

     22.  Time of the Essence.  Time is of the essence of this Agreement.
          -------------------                                            

     23.  Headings.  The headings used in this Agreement are for convenience and
          --------                                                              
reference only and in no way define, limit, simplify or describe the scope or
intent of this Agreement, and in no way effect or constitute a part of this
Agreement.

     24.  Excusable Delay.  None of the parties hereto shall be obligated to
          ---------------                                                   
perform and none shall be deemed to be in default hereunder, if the performance
of a non-monetary obligation is prevented by the occurrence of any of the
following, other than as the result of the financial inability of the party
obligated to perform: acts of God, strikes, lock-outs, other industrial
disturbances, acts of a public enemy, wars or war-like action (whether actual,
impending or expected and whether de jure or de facto), arrest or other
restraint of governmental (civil or military) blockades, insurrections, riots,
epidemics, landslides, lightning, earthquakes, fires, hurricanes, storms,
floods, washouts, sink holes, civil disturbances, explosions, breakage or
accident to equipment or machinery, confiscation or seizure by any government of
public authority, nuclear reaction or radiation, radioactive contamination or
other causes, whether of the kind herein enumerated, or otherwise, that are not
reasonably within the control of the party claiming the right to delay
performance on account of such occurrence.

     25.  Multiple Counterparts.  This Agreement may be executed in one or more
          ---------------------                                                
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     26.  Law Governing.  This Agreement shall be construed and governed by the
          -------------                                                        
laws of the State of Washington.

                                       9
<PAGE>
 
     27.  Perfection of Title.  The parties hereto shall do all other acts and
          -------------------                                                 
things that may be reasonably necessary or proper, fully or more fully, to
evidence, complete or perfect this Agreement, and to carry out the intent of
this Agreement.

     28.  Entire Agreement.  This instrument, together with all of the other
          ----------------                                                  
Authorized Agreements described in the Share Exchange Agreement, contains the
entire understanding of the parties and may not be changed orally, but only by
an instrument in writing signed by the party against whom enforcement of any
waiver, change, modification, extension, or discharge is sought.

     IN WITNESS WHEREOF, the parties have executed this Agreement effective as
of the date first written above.


                                    WESTOWER CORPORATION



                                    By /s/ Calvin J. Payne
                                      ------------------------------------------
                                       Calvin J. Payne, Chairman of the Board



                                    /s/ Tom T. Cunningham
                                    --------------------------------------------
                                    TOM T. CUNNINGHAM

                                       10

<PAGE>
 
                                                                     EXHIBIT 2.3

                             EMPLOYMENT AGREEMENT


     THIS AGREEMENT is made this 31st day of August, 1998, between STANDBY
SERVICES, INC., a Texas corporation (the "Company"), and TOM T. CUNNINGHAM ("the
Employee").

     WHEREAS, Westower Corporation, a Washington corporation ("Westower") is
acquiring from the Employee all of the outstanding shares of the Company by
which the Employee has previously been employed, pursuant to a Share Exchange
Agreement dated as of August 31, 1998 (the "Share Exchange Agreement"); and

     WHEREAS, Westower and the Company desire that the Company continue
employing the Employee and the Employee desires to accept such employment by the
Company effective on the Closing Date under the Share Exchange Agreement (the
"Closing Date") subject to the terms and conditions contained herein; and

     WHEREAS, in serving as an employee of the Company, the Employee will be in
a position in which the Employee will participate in the use and development of
confidential proprietary information about the Company and its affiliates (which
term shall include Westower and its other subsidiaries) as to which the Company
desires to protect fully its rights;

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, and in consideration of the
promises and the mutual covenants and agreements herein set forth, the parties
agree as follows:

     1.   Employment.  As of the Closing Date, the Company hereby employs the
          ----------                                                         
Employee as its President and Chief Executive Officer, and the Employee accepts
such employment, subject to the terms and conditions set forth herein. The
Employee shall perform all duties and services regularly incident to the
position of President and Chief Executive Officer of the Company, and the
Employee shall perform such other duties and services as may be prescribed by
the Board of Directors of the Company from time to time; provided, however, that
(a) the Employee's duties will not require him to relocate his residence from
Houston, Texas, and (b) the duties and services the Employee will be asked to
provide will be at minimum of the nature of his position as the Chief Executive
Officer of the Company with added responsibilities for Westower. In addition,
the Employee will faithfully serve on the Board of Directors of the Company
until his death, resignation or removal from the Board. During his employment
hereunder, the Employee shall devote his best efforts and attention, on a full-
time basis, to the performance of the duties required of him as an employee of
the Company. The Employee further agrees to serve without additional
compensation in such executive positions with Westower as the Board of Directors
of Westower may designate and to fulfill the responsibilities incident to such
positions.
<PAGE>
 
     2.   Compensation.  As compensation for services rendered by the Employee
          ------------                                                        
hereunder, the Employee shall receive:

          (a)  An annual salary of $150,000.00, or such higher salary as shall
be determined by the Board of Directors at the Employee's annual evaluation and
compensation review;

          (b)  Insurance and other benefits equivalent to the benefits provided
other employees of the Company;

          (c)  Four weeks of paid vacation;

          (d)  Participation in the Company's retirement plan as such plan may
be amended or modified by the Company from time to time;

          (e)  Reimbursement for all reasonable expenses incurred by the
Employee in the performance of his duties under this Agreement, provided that
the Employee submits verification of such expenses in accordance with the
policies of the Company;

          (f)  Participation in any compensation incentive program of the
Company, if any, as such program may be amended or modified by the Company from
time to time; and

          (g)  The Employee's reasonable automobile cost and professional
membership dues.

     Prior to the end of each calendar year of this Agreement, the Company may
review with the Employee his compensation hereunder. Any increase in salary or
changes in fringe benefits agreed upon by the Employee and the Company at such
annual review shall become effective the following January 1 unless otherwise
agreed to by the Company and the Employee.

     3.   Confidential Information and Trade Secrets.
          ------------------------------------------ 

          (a)  The Employee recognizes that the Employee's position with the
Company requires considerable responsibility and trust, and, in reliance on the
Employee's loyalty, the Company may entrust the Employee with highly sensitive
confidential, restricted and proprietary information involving Trade Secrets and
Confidential Information of the Company and its affiliates.

          (b)  For purposes of this Agreement, a "Trade Secret" is any
scientific or technical information, design, process, procedure, formula or
improvement of the Company or any of its affiliates that is valuable and not
generally known to competitors of the Company and its affiliates. "Confidential
Information" is any data or information, other than Trade Secrets, of the
Company or any of its affiliates that is important, competitively sensitive, and
not generally known by the public, including, but not limited to, the strategic
and business plans, business prospects, training manuals, 

                                       2
<PAGE>
 
product development plans, bidding and pricing procedures, market strategies,
internal performance statistics, financial data, confidential personnel
information concerning employees, supplier data, operational or administrative
plans, policy manuals, and terms and conditions of contracts and agreements and
such similar information relating to subsidiaries and affiliates of the Company.
The terms "Trade Secret" and "Confidential Information" shall not apply to
information which is (i) already in the Employee's possession (unless such
information was obtained by the Employee from the Company or its affiliates or
was obtained by the Employee in the course of the Employee's employment by the
Company or its affiliates), (ii) received by the Employee from a third party
with no restriction on disclosure, (iii) becomes generally available to the
public through no wrongful act on the part of the Employee, or (iv) required to
be disclosed by any applicable law.

          (c)  Except as required to perform the Employee's duties as an
employee, the Employee will not use or disclose any Trade Secrets or
Confidential Information during his employment, at any time after termination of
his employment and prior to such time as they cease to be Trade Secrets or
Confidential Information through no act of the Employee in violation of this
Paragraph 3.

          (d)  Upon the request of the Company and, in any event, upon the
termination of employment hereunder, the Employee will surrender to the Company
all memoranda, notes, records, drawings, manuals or other documents (including
all copies thereof) pertaining to the Company's business, the Employee's
employment or the business of the Company or its affiliates. The Employee will
also leave with the Company all materials involving any Trade Secrets or
Confidential Information. All such information and materials, whether or not
made or developed by the Employee, shall be the sole and exclusive property of
the Company or its affiliates, and the Employee hereby assigns to the Company
all of the Employee's right, title and interest in and to any and all of such
information and materials.

     4.   Covenant Not to Compete.
          ----------------------- 

          (a)  The Employee hereby covenants and agrees with the Company that
during the period which is the longer of (i) three years, (ii) the term of his
employment with the Company, or (iii) 18 months after the termination of his
employment, for any reason, with or without cause, the Employee will not, except
as expressly permitted hereunder, directly or indirectly (1) operate, develop or
own any interest other than the ownership of less than five percent of the
equity securities of a publicly traded company, in any business which has
significant activities (viewed in relation to the business of the Company or its
affiliates), or has announced intentions to focus significant resources,
relating to any business in which the Company or its affiliates is currently
engaged and the business of building, owning, managing, leasing or operating
towers for wireless carriers or other similar entities (a "Business"); (2)
compete with the Company or its affiliates in the operation or development of
any Business within North America (Canada, Mexico, and the United States of
America); (3) be employed by any business which owns, manages, or operates a
Business; (4) interfere with, solicit, disrupt or attempt to disrupt any past,
present or prospective relationship, contractual or otherwise, between the
Company or its affiliates, and any customer, client, supplier 

                                       3
<PAGE>
 
or employee of the Company or its affiliates; or (5) solicit any employee of the
Company or its affiliates to leave their employment with the Company or its
subsidiaries or affiliates, as the case may be, or hire any such employee to
work for a Business. The Employee shall not be entitled to circumvent the
provisions of this Paragraph 4 by entering into a relationship with a Business
as a consultant, director, advisor, or otherwise, which has the effect of
competing with the Company, its affiliates or subsidiaries.

          (b)  If a judicial determination is made that any of the provisions of
this Paragraph 4 constitutes an unreasonable or otherwise unenforceable
restriction against the Employee, the provisions of this Paragraph 4 shall be
rendered void only to the extent that such judicial determination finds such
provisions to be unreasonable or otherwise unenforceable. In this regard, the
parties hereto hereby agree that any judicial authority construing this
Agreement shall be empowered to sever any portion of the territory or prohibited
business activity from the coverage of this Paragraph 4 and to apply the
provisions of this Paragraph 4 to the remaining portion of the territory or the
remaining business activities not so severed by such judicial authority.
Moreover, notwithstanding the fact that any provisions of this Paragraph 4 are
determined not to be specifically enforceable, the Company shall nevertheless be
entitled to recover monetary damages as a result of the breach of such provision
by the Employee. The time period during which the prohibitions set forth in this
Paragraph 4 shall apply shall be tolled and suspended as to the Employee for a
period equal to the aggregate quantity of time during which the Employee
violates such prohibitions in any respect.

     5.   Specific Enforcement.  The Employee specifically acknowledges and
          --------------------                                             
agrees that the restrictions set forth in Paragraphs 3 and 4 hereof are
reasonable and necessary to protect the legitimate interest of the Company and
its affiliates and that the Company would not have employed the Employee in the
absence of such restrictions. The Employee further acknowledges and agrees that
any violation of the provisions of Paragraphs 3 or 4 hereof will result in
irreparable injury to the Company or its affiliates, that the remedy at law for
any violation or threatened violation of such paragraphs will be inadequate and
that in the event of any such breach, the Company or its affiliates, in addition
to any other remedies or damages available at law or in equity, shall be
entitled to temporary injunctive relief before trial from any court of competent
jurisdiction as a matter of course and to permanent injunctive relief without
the necessity of proving actual damages.

     6.   Stock Options, Etc.
          -------------------

          (a)  Subject to approval of the applicable committee of Westower's
Board of Directors, Employee shall be entitled to an option to purchase 12,800
shares of Westower's common stock (the "Westower Shares") pursuant to the
Westower Corporation 1998 Stock Incentive Compensation Plan (the "Plan").

          (b)  The Company will do what is reasonably necessary for the Employee
to designate employees (including the Employee) of the Company to receive the
following compensation:

                                       4
<PAGE>
 
               (i)   For each of the three fiscal years ending after the Closing
Date, a bonus pool equal to 10 percent of the net pre-tax earnings (if any) of
the Company in such year, with net pre-tax earnings of the Company measured
allocating the Employee's compensation hereunder as a cost of the Company and
measured according to generally accepted accounting principles, consistently
applied, as reflected in the financial statements for the Company, without any
allocation to the Company for overhead of Westower and its subsidiaries other
than the Company. This obligation of the Company will survive the termination of
this Agreement, but the distributions made after the effective date of any such
termination will be made by the successor chief executive officer of the
Company.

               (ii)  Employee shall have the right to recommend to the committee
of Westower's Board of Directors that administers Westower's stock option plan
the identities of employees to receive options pursuant to the Plan and the
number of shares to be subject to the options for each such employee, such
options to be effective and priced on the date of grant; provided, however, that
the total number of options granted pursuant to the terms of this provision will
in no event confer on such Company employees any rights to purchase an aggregate
of more than 80,000 shares of Westower common stock.

          (c)  Subject to approval of the committee, all options granted under
this paragraph will be exercisable within 10 years and become vested according
to the following schedule: on the first anniversary of date of grant, 33 percent
of the total shares granted; on the second anniversary of the date of grant; 33
percent of the total shares granted; and on the third anniversary of the date of
grant, the remaining 34 percent of the total shares granted.

          (d)  Subject to the approval of the committee, all options granted
hereunder or in connection with the Employee's employment hereunder shall
constitute "incentive stock options" within the meaning of Section 422 of the
Internal Revenue Code of 1986, as amended (the "Code"), to the extent permitted
under the Code and applicable rulings and regulations, or, in the Employee's
discretion, nonqualified stock options.

     7.   Term.  This Agreement shall be effective as of the Closing Date and
          ----                                                               
shall continue for a term of three years from the Closing Date unless terminated
by either party in the manner set forth herein. This Agreement shall be
automatically renewed for successive one year terms unless written notice of
termination is given by either party at least 90 days prior to the end of then
current term.

     8.   Termination Upon Death or Disability of the Employee.  In the event
          ----------------------------------------------------               
the Employee dies during the term of this Agreement, or the Employee is disabled
and unable to perform his duties in any material respect for a period of six
months, this Agreement shall immediately terminate and neither the Employee nor
the Company shall have any further obligations hereunder, except that the
Company shall continue to be obligated under Paragraph 2 hereof for any unpaid
salary, accrued benefits or unreimbursed expenses owed to the Employee or his
estate that have accrued but not been paid as of the Termination Date.

                                       5
<PAGE>
 
     9.   Termination by the Employee.  The Employee may at any time terminate
          ---------------------------                                         
his employment by giving the Company 60 days prior written notice of his intent
to terminate the Agreement, unless the termination is because of Changed
Circumstances as set forth in Paragraph 11. At the Termination Date, the Company
shall have no further obligation to the Employee and the Employee shall have no
further rights or obligations hereunder, except as set forth in Paragraphs 3 and
4 above, and except for the Company's obligation under Paragraph 2 hereof for
unpaid salary, accrued benefits or unreimbursed expenses that have accrued but
have not been paid as of the Termination Date, unless termination is because of
Changed Circumstances, as set forth in Paragraph 11.

     10.  Termination for Cause.  The Company shall have the right at any time
          ---------------------                                               
to terminate the Employee's employment immediately for cause, which shall
include any of the following reasons: the Employee's violation of the provisions
of Paragraphs 3 or 4 of this Agreement, gross neglect of duty, conviction under
a state or federal law involving commission of a crime against the Company or
any of its affiliates or a felony, willful failure or refusal to carry out
lawful duties or directions of the Board of Directors of the Company reasonably
consistent with such duties, or the willful engaging by the Employee in gross
misconduct materially injurious to the Company of its affiliates.

     The Employee's obligations under Paragraphs 3 and 4 hereof shall survive
the termination of the Agreement pursuant to this Paragraph 10. In the event the
Employee's employment hereunder is terminated in accordance with this paragraph,
the Company shall have no further obligation to make any payments to the
Employee hereunder except for unpaid salary, accrued benefits or unreimbursed
expenses that have accrued but have not been paid as of the Termination Date.

     Notwithstanding the foregoing, any termination of the Employee shall not be
considered a termination for cause and shall be considered a termination without
cause pursuant to Paragraph 11 hereof, if such termination is effected without:
(a) five calendar days' notice to the Employee setting forth the reasons for the
Company's intention to terminate for cause; (b) an opportunity for the Employee,
together with his counsel, to be heard before the Board of Directors of the
Company; and (c) delivery to the Employee of a notice of termination from the
Board of Directors of the Company finding that in the good faith opinion of the
Board of Directors of the Company there exists cause to terminate the Employee
pursuant to this Paragraph 10.

     11.  Termination by the Company Without Cause or by the Employee for
          ---------------------------------------------------------------
Changed Circumstances.  The Company may terminate the employment relationship
- ---------------------                                                        
with the Employee without cause (which shall not include a termination pursuant
to Paragraphs 8, 9 or 10) by giving the Employee 15 days prior written notice.
The Employee may terminate the employment relationship with the Company for
Changed Circumstances by giving the Company 15 days prior written notice. The
term "Changed Circumstances" as used in this Paragraph 11 means (a) a reduction
in the Employee's base salary and benefits, (b) a material reduction in the
scope of the Employee's authority and/or responsibilities, (c) during the first
three years following the Closing 

                                       6
<PAGE>
 
Date, a change in the Company's management under which the Employee is no longer
the Company's President and Chief Executive Officer, (d) a change in the control
of the Company, and/or (e) breach of the Agreement by the Company which the
Company fails to cure after 30 days' written notice to the Company. In the event
the employment relationship is terminated by the Company without cause or by the
Employee for Changed Circumstances during the term hereof, the Company shall pay
the Employee all accrued benefits and unreimbursed expenses owed to the Employee
that have accrued but have not been paid as of the Termination Date. The Company
shall also continue to pay to the Employee all salary and benefits hereunder
until the third anniversary of the Closing Date. Such payments shall be made in
accordance with the Employee's regular salary schedule. Payment of the severance
benefits set forth herein shall be subject to the execution and delivery of a
Separation Agreement (including a release of all claims against the Company) the
terms of which will reasonably be determined by the parties. The Company's
obligations pursuant to this Paragraph 11 shall terminate immediately upon any
violation of Paragraph 3 or 4 or the taking of any other action by the Employee
that would have the effect of declaring the provisions of Paragraph 3 or 4 not
enforceable.

     12.  Assignment.
          ---------- 

          (a)  The rights and benefits of the Employee under this Agreement,
other than accrued and unpaid amounts due under Paragraph 2 hereof, are personal
to him and shall not be assignable. Discharge of the Employee's undertakings in
Paragraphs 3 and 4 hereof shall be an obligation of the Employee's executors,
administrators, or other legal representatives or heirs.

          (b)  This Agreement may not be assigned by the Company except to an
affiliate of the Company; provided, however, that if the Company shall or sell
or otherwise transfer substantially all its assets to another corporation or
entity, the Company shall assign its rights hereunder to that corporation or
entity and cause such corporation or entity to assume the Company's obligations
under this Agreement.

     13.  Conflict.  Notwithstanding anything herein contained to the contrary,
          --------                                                             
in the event of any conflict between the terms of the Share Exchange Agreement
or this Agreement, the terms of the Share Exchange Agreement shall control.

     14.  Attorney's Fees.  In the event that it should become necessary for any
          ---------------                                                       
party entitled hereunder to bring suit against any other party to this Agreement
for enforcement of the covenants herein contained, the parties hereby covenant
and agree that the party who is found to be in violation of said covenants shall
also be liable for all reasonable attorney's fees and costs of court incurred by
the other parties hereto.

     15.  Benefit.  All the terms and provisions of this Agreement shall be
          -------                                                          
binding upon and inure to the benefit of and be enforceable by the parties
hereto, and their respective heirs, executors, administrators, personal
representatives, successors and permitted assigns.

                                       7
<PAGE>
 
     16.  Notices.  Any notice, request, instruction or other document to be
          -------                                                           
given hereunder by any party or parties hereto to the other parties will be
effective upon receipt by the other parties if given in writing, delivered
personally, mailed by registered or certified mail, postage paid, sent by
commercial overnight delivery service, fees prepaid, or sent by confirmed
facsimile transmission to the following addresses or facsimile transmission
numbers:

          (a)  If to the Company, addressed to:

               Westower Corporation
               7001 N.E. 40th Avenue
               Vancouver, Washington 98661
               Attn:  Chairman of the Board

               Facsimile Transmission Number: 604-576-4855
               Confirmation Number: 604-576-4755

          (b)  If to the Employee, addressed to:

               Mr. Tom T. Cunningham
               Standby Services, Inc.
               1818 Kersten
               Houston, Texas 77043

               Facsimile Transmission Number: 713-467-8479
               Confirmation Number: 713-467-1362

     Any party hereto may direct in writing that notices or courtesy copies
thereof be sent to other or additional addresses by like notice.

     a.   Construction.  Words of any gender used in this Agreement shall be
          ------------                                                      
          held and construed to include any other gender, and words in the
          singular number shall be held to include the plural, and vice versa,
          unless the context requires otherwise. In addition, the pronouns used
          in this Agreement shall be understood and construed to apply whether
          the party referred to is an individual, partnership, joint venture,
          corporation or an individual or individuals doing business under a
          firm or trade name, and the masculine, feminine and neuter pronouns
          shall each include the other and may be used interchangeably with the
          same meaning.

     17.  Waiver.  No course of dealing on the part of any party hereto or its
          ------                                                              
agents, or any failure or delay by any such party with respect to exercising any
right, power or privilege of such party under this Agreement or any instrument
referred to herein shall operate as a waiver thereof, and any single or partial
exercise of any such right, power or privilege shall not preclude any later
exercise thereof or any exercise of any other right, power or privilege
hereunder or thereunder.

                                       8
<PAGE>
 
     18.  Cumulative Rights.  The rights and remedies of any party under this
          -----------------                                                  
Agreement and the instruments executed or to be executed in connection herewith,
or any of them, shall be cumulative and the exercise or partial exercise of any
such right or remedy shall not preclude the exercise of any other right or
remedy.

     19.  Invalidity.  In the event any one or more of the provisions contained
          ----------                                                           
in this Agreement or in any instrument referred to herein or executed in
connection herewith shall, for any reason, be held to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality, or unenforceability
shall not affect the other provisions of this Agreement or any such other
instrument. If any covenant in this Agreement, or any part thereof, is held to
be unenforceable because of its duration or its geographic scope, the parties
agree that the court making such determination shall have the power to reduce
the duration and/or area of such covenant to the longest duration and to the
greatest geographical scope which is permitted, and, in said reduced form, such
covenant shall then be enforced. The Employee acknowledges that the provisions
of this Agreement are reasonable and necessary for the protection of the
Company, that the consideration therefor is reasonable and sufficient, and that
the provisions of this Agreement are an inducement without which the Company
would not have entered into this Agreement.

     20.  Headings.  The headings used in this Agreement are for convenience and
          --------                                                              
reference only and in no way define, limit, simplify or describe the scope or
intent of this Agreement, and in no way effect or constitute a part of this
Agreement.

     21.  Multiple Counterparts.  This Agreement may be executed in one or more
          ---------------------                                                
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

     22.  Law Governing.  This Agreement shall be construed and governed by the
          -------------                                                        
laws of the State of Texas, and all obligations hereunder shall be deemed
performable in Harris County, Texas.

     23.  Entire Agreement.  This instrument, together with all of the other
          ----------------                                                  
Authorized Agreements described in the Share Exchange Agreement, contains the
entire understanding of the parties and may not be changed orally, but only by
an instrument in writing signed by the party against whom enforcement of any
waiver, change, modification, extension, or discharge is sought.

                                       9
<PAGE>
 
     IN WITNESS WHEREOF, the parties have executed this Agreement effective as
of the date first written above.


                                    STANDBY SERVICES, INC.



                                    By /s/ Calvin J. Payne
                                      ------------------------------------------
                                      Calvin J. Payne, Vice President



                                    /s/ Tom T. Cunningham
                                    --------------------------------------------
                                    TOM T. CUNNINGHAM

                                       10
<PAGE>
 
ACCEPTED AND AGREED AS TO ITS
OBLIGATIONS IN PARAGRAPH 6:

WESTOWER CORPORATION



By /s/ Calvin J. Payne
  -------------------------------------
  Calvin J. Payne
  Chairman of the Board

                                       11


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